1
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Palladium Catalyzed Ring-Opening of Diazabicylic Olefins with 4-Halo-1,3-Dicarbonyl Compounds: Accessing 3(2H)-Furanone-Appended Cyclopentenes. ORGANICS 2023. [DOI: 10.3390/org4010006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023] Open
Abstract
We have realized a Pd-catalyzed ring-opening of diazabicyclic olefins with 4-halo-1,3-dicarbonyl compounds. This reaction resulted in the formation of 3(2H)-furanone-appended hydrazino cyclopentenes. The reaction proceeds via the formation of a π-allylpalladium intermediate which is attacked by the active methylene species, and an intramolecular nucleophilic substitution in the 4-halo-1,3-dicarbonyl moiety furnishes the 3(2H)-furanone-substituted cyclopentene. We could extend this methodology to cyclopropane-appended spirotricyclic olefin for synthesizing 3(2H)-furanone-substituted spiro[2.4]hept-5-ene.
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2
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Adsorption of Cu2+ by Modified Chitosan Microspheres and Its Application in homocoupling of Arylboronic Ac. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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3
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Pineschi M. Boron Reagents and Catalysts for the Functionalization of Strained Heterocycles. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001493] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Mauro Pineschi
- Department of Pharmacy University of Pisa Via Bonanno 33 56126 Pisa Italy Tel
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4
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Preethalayam P, Jijy E, Prakash P, Chand Sarngadharan S, Vijayan A, Radhakrishnan KV, John J. Diazanorbornene: A Valuable Synthon towards Carbocycles and Heterocycles. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001131] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
| | - E. Jijy
- Department of Chemistry MES College 685553 Nedumkandam, Chembalam PO Kerala, Idukki India
| | - Praveen Prakash
- Department of Chemistry Sree Narayana College 691001 Kollam Kerala India
| | - Sarath Chand Sarngadharan
- School of Chemistry and Biochemistry Georgia Institute of Technology 901 Atlantic Drive 30332 Atlanta Georgia United States
| | - Ajesh Vijayan
- Department of Chemistry CHRIST (Deemed to be University) Hosur road 560029 Bengaluru India
| | - K. V. Radhakrishnan
- CSIR ‐ National Institute for Interdisciplinary Science and Technology 695019 Thiruvananthapuram India
| | - Jubi John
- CSIR ‐ National Institute for Interdisciplinary Science and Technology 695019 Thiruvananthapuram India
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5
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Zhang Y, Shang T, Li L, He Y, Wen T, Tu Y, Wang S, Lin D. Rh(III)-catalyzed C–H activation-desymmetrization of diazabicycles using enol as directing group: A straightforward approach to difunctionalized cyclopentenes. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.02.063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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6
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Santhini PV, Smrithy AS, Irfana Jesin CP, Varughese S, John J, Radhakrishnan KV. Accessing highly functionalized cyclopentanoids via a cascade palladation approach: unprecedented benzylic C-H activation towards cyclopentenoindanes. Chem Commun (Camb) 2018; 54:2982-2985. [PMID: 29504615 DOI: 10.1039/c7cc09521j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A Pd-catalyzed synthesis of 3,4,5-trisubstituted cyclopentenes from diazabicyclic olefins and o-iodobenzoates has been developed. The hitherto unknown cascade process involves three stages: carbopalladation, oxypalladation and a Tsuji-Trost reaction. We have also developed a facile route involving a novel benzylic C-H activation towards cyclopentenoindane moieties.
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Affiliation(s)
- P V Santhini
- Organic Chemistry Section, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram-19, India. and Academy of Scientific and Innovative Research (AcSIR), CSIR-NIIST, Thiruvananthapuram-19, India
| | - A S Smrithy
- Organic Chemistry Section, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram-19, India.
| | - C P Irfana Jesin
- Organic Chemistry Section, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram-19, India.
| | - Sunil Varughese
- Organic Chemistry Section, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram-19, India. and Academy of Scientific and Innovative Research (AcSIR), CSIR-NIIST, Thiruvananthapuram-19, India
| | - Jubi John
- Organic Chemistry Section, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram-19, India. and Academy of Scientific and Innovative Research (AcSIR), CSIR-NIIST, Thiruvananthapuram-19, India
| | - K V Radhakrishnan
- Organic Chemistry Section, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram-19, India. and Academy of Scientific and Innovative Research (AcSIR), CSIR-NIIST, Thiruvananthapuram-19, India
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7
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Dhanya BP, Gopalan G, Sasikumar P, Neethu S, Meenu MT, Sharathna P, John J, Varughese S, Sabu M, Dan M, Radhakrishnan KV. Lewis-Acid-Catalyzed Activation of Zerumbone towards Sesquiterpenoid Derivatives: Sustainable Utilization of Abundant Natural Resources for the Synthesis of Chemically Diverse Architectures. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Bhandara Purayil Dhanya
- Organic Chemistry Section; National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
- Academy of Scientific and Innovative Research (AcSIR); National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
| | - Greeshma Gopalan
- Organic Chemistry Section; National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
- Academy of Scientific and Innovative Research (AcSIR); National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
| | - Parameswaran Sasikumar
- Organic Chemistry Section; National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
| | - Sivadas Neethu
- Organic Chemistry Section; National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
- Academy of Scientific and Innovative Research (AcSIR); National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
| | - Murugan Thulasi Meenu
- Organic Chemistry Section; National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
- Academy of Scientific and Innovative Research (AcSIR); National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
| | - Puthiyaparambath Sharathna
- Organic Chemistry Section; National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
- Academy of Scientific and Innovative Research (AcSIR); National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
| | - Jubi John
- Organic Chemistry Section; National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
- Academy of Scientific and Innovative Research (AcSIR); National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
| | - Sunil Varughese
- Organic Chemistry Section; National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
- Academy of Scientific and Innovative Research (AcSIR); National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
| | - Mamiyil Sabu
- Department of Botany; University of Calicut; Calicut-35 India
| | - Mathew Dan
- Genetic Resource Division; Jawaharlal Nehru Tropical Botanic Garden and Research Institute; Thiruvananthapuram-562 India)
| | - Kokkuvayil Vasu Radhakrishnan
- Organic Chemistry Section; National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
- Academy of Scientific and Innovative Research (AcSIR); National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
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8
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Santhini PV, Nimisha G, John J, Suresh E, Varma RL, Radhakrishnan KV. Pd-Catalyzed oxidative annulation of enamides with diazabicyclic olefins: rapid access to cyclopentene fused 2-pyrrolines. Chem Commun (Camb) 2017; 53:1848-1851. [DOI: 10.1039/c6cc08753a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A catalytic tandem transformation via C–H activation of enamides for the stereoselective synthesis of cyclopentene fused 2-pyrrolines has been realized.
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Affiliation(s)
- P. V. Santhini
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi 110001
- India
- Organic Chemistry Section
- CSIR-National Institute for Interdisciplinary Science and Technology
| | - G. Nimisha
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi 110001
- India
- Organic Chemistry Section
- CSIR-National Institute for Interdisciplinary Science and Technology
| | - Jubi John
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi 110001
- India
- Organic Chemistry Section
- CSIR-National Institute for Interdisciplinary Science and Technology
| | - E. Suresh
- Central Salt and Marine Chemicals Research Institute
- Bhavnagar 364 002
- India
| | - R. Luxmi Varma
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi 110001
- India
- Organic Chemistry Section
- CSIR-National Institute for Interdisciplinary Science and Technology
| | - K. V. Radhakrishnan
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi 110001
- India
- Organic Chemistry Section
- CSIR-National Institute for Interdisciplinary Science and Technology
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9
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An easy access to fused chromanones via rhodium catalyzed oxidative coupling of salicylaldehydes with heterobicyclic olefins. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.05.031] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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10
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Vijayan A, Baiju T, Varughese S, Radhakrishnan K. Transition metal free intramolecular approach for the synthesis of cyclopenta[ b ]chromene derivatives from phenol substituted fulvene derived azabicyclic olefins. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.05.081] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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11
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Chand SS, Saranya S, Preethanuj P, Dhanya BP, Jijy E, Prakash P, Sasidhar BS, Szymoniak J, Santhini PV, Radhakrishnan KV. Trapping the Lewis acid generated transient species from pentafulvene derived diazanorbornenes with ortho-functionalized aryl iodides and aliphatic alcohols. Org Biomol Chem 2015; 12:3045-61. [PMID: 24691752 DOI: 10.1039/c4ob00031e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Herein we describe our efforts on the Lewis acid catalyzed stereoselective ring-opening of pentafulvene derived diazabicyclic olefins using various ortho-functionalized aryl iodides such as 2-iodoanilines, 2-iodophenols and 2-iodobenzene thiols to access trans-1,2 disubstituted alkylidenecyclopentenes. The scope of the reaction was also explored with a range of easily available aromatic and aliphatic alcohols. Furthermore, the palladium catalyzed intramolecular Heck cyclization of trans-1,2 disubstituted alkylidenecyclopentenes would provide an easy approach for the synthesis of highly functionalized spiropentacyclic frameworks consisting of a cyclopentene fused to an indoline/benzothiophene and pyrazolidine.
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Affiliation(s)
- S Sarath Chand
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India.
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12
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Sarath Chand S, Sasidhar BS, Prakash P, Sasikumar P, Preethanuj P, Jaroschik F, Harakat D, Vasse JL, Radhakrishnan KV. Lewis acid catalyzed C-3 alkylidenecyclopentenylation of indoles: an easy access to functionalized indoles and bisindoles. RSC Adv 2015. [DOI: 10.1039/c5ra01107h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
A Lewis acid catalyzed C-3 alkylidenecyclopentenylation of indoles through the ring opening of pentafulvene derived diazabicyclic olefins has been developed toward the synthesis of indole and bisindole derivatives.
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Affiliation(s)
- S. Sarath Chand
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi 110001
- India
- Organic Chemistry Section
- National Institute for Interdisciplinary Science and Technology (CSIR)
| | - B. S. Sasidhar
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi 110001
- India
- Organic Chemistry Section
- National Institute for Interdisciplinary Science and Technology (CSIR)
| | - Praveen Prakash
- Organic Chemistry Section
- National Institute for Interdisciplinary Science and Technology (CSIR)
- Trivandrum 695019
- India
| | - P. Sasikumar
- Organic Chemistry Section
- National Institute for Interdisciplinary Science and Technology (CSIR)
- Trivandrum 695019
- India
| | - P. Preethanuj
- Organic Chemistry Section
- National Institute for Interdisciplinary Science and Technology (CSIR)
- Trivandrum 695019
- India
| | | | | | | | - K. V. Radhakrishnan
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi 110001
- India
- Organic Chemistry Section
- National Institute for Interdisciplinary Science and Technology (CSIR)
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13
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Jijy E, Prakash P, Shimi M, Pihko PM, Joseph N, Radhakrishnan KV. Rhodium catalyzed oxidative coupling of salicylaldehydes with diazabicyclic olefins: a one pot strategy involving aldehyde C-H cleavage and π-allyl chemistry towards the synthesis of fused ring chromanones. Chem Commun (Camb) 2014; 49:7349-51. [PMID: 23846351 DOI: 10.1039/c3cc43485k] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
An efficient one pot strategy for the synthesis of cyclopentene fused chromanone derivatives through the direct oxidative coupling of salicylaldehydes with bicyclic olefins in the presence of a rhodium-copper catalyst system is described. This is the first report on the ring opening-ring closing of bicyclic hydrazines via metal catalyzed oxidative coupling reaction.
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Affiliation(s)
- E Jijy
- Organic Chemistry Section, Chemical Sciences and Technology Division, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695 019, India
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14
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Zhang Y, Wu Q, Cui S. Rh(iii)-catalyzed C–H activation–desymmetrization of diazabicycles with arenes: facile synthesis of functionalized cyclopentenes. Chem Sci 2014. [DOI: 10.1039/c3sc52524d] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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15
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Ruthenium catalyzed desymmetrization of diazabicyclic olefins to access heteroaryl substituted cyclopentenes through C–H activation of phenylazoles. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.12.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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16
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Prakash P, Jijy E, Aparna P, Viji S, Radhakrishnan K. Rhodium(III) catalyzed synthesis of isoquinolone fused azabicycles through C–H activation of N-pivaloyloxy benzamides. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.12.049] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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17
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Gu P, Xu Q, Shi M. Enantioselective Desymmetrization of Bicyclic Hydrazines using a C2-Symmetric N-Heterocyclic Carbene (NHC) Palladium Complex as Catalyst. Organometallics 2013. [DOI: 10.1021/om4010687] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Peng Gu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Mei-Long Road, Shanghai 200237, People’s Republic of China
| | - Qin Xu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Mei-Long Road, Shanghai 200237, People’s Republic of China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Mei-Long Road, Shanghai 200237, People’s Republic of China
- State Key Laboratory of Organometallic Chemistry,
Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, People’s Republic of China
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18
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Rhodium(III)-catalyzed ring-opening of strained olefins through C–H activation of O-acetyl ketoximes: an efficient synthesis of trans-functionalized cyclopentenes and spiro[2.4]heptenes. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.10.089] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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19
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Ajish K, Joseph N, Priya Rani M, Raghu K, Vineetha V, Radhakrishnan K. Synthesis and biological evaluation of carbohydrate appended hydrazinocyclopentenes with potent glycation and α-glucosidase inhibition activities. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.08.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Prakash P, Jijy E, Preethanuj P, Pihko PM, Sarath Chand S, Radhakrishnan KV. Palladium-Catalyzed Skeletal Rearrangement of Spirotricyclic Olefins: A Facile One-Pot Strategy for the Synthesis of a Novel Motif with Cyclopentene Fused to Benzofuran and Pyrazolidine. Chemistry 2013; 19:10473-7. [DOI: 10.1002/chem.201301475] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Indexed: 12/20/2022]
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21
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Chand SS, Jijy E, Prakash P, Szymoniak J, Preethanuj P, Dhanya BP, Radhakrishnan KV. Palladium/Lewis Acid Mediated Domino Reaction of Pentafulvene Derived Diazabicyclic Olefins: Efficient Access to Spiropentacyclic Motif with an Indoline and Pyrazolidine Fused to Cyclopentene. Org Lett 2013; 15:3338-41. [DOI: 10.1021/ol401374d] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- S. Sarath Chand
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India, Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695019, India, and Université de Reims, 51687 Reims Cedex 2, France
| | - E. Jijy
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India, Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695019, India, and Université de Reims, 51687 Reims Cedex 2, France
| | - Praveen Prakash
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India, Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695019, India, and Université de Reims, 51687 Reims Cedex 2, France
| | - Jan Szymoniak
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India, Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695019, India, and Université de Reims, 51687 Reims Cedex 2, France
| | - P. Preethanuj
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India, Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695019, India, and Université de Reims, 51687 Reims Cedex 2, France
| | - B. P. Dhanya
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India, Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695019, India, and Université de Reims, 51687 Reims Cedex 2, France
| | - K. V. Radhakrishnan
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India, Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695019, India, and Université de Reims, 51687 Reims Cedex 2, France
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22
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Prakash P, Jijy E, Shimi M, Aparna PS, Suresh E, Radhakrishnan KV. Mild rhodium(i) catalyzed ring opening of cyclopropane appended spirotricyclic olefins through C–H activation of arylboronic acids. RSC Adv 2013. [DOI: 10.1039/c3ra43191f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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23
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Joseph N, Rajan R, John J, Devika NV, Chand SS, Suresh E, Pihko PM, Radhakrishnan KV. An exclusive approach to 3,4-disubstituted cyclopentenes and alkylidene cyclopentenes via the palladium catalyzed ring opening of azabicyclic olefins with aryl halides. RSC Adv 2013. [DOI: 10.1039/c3ra41504j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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24
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Palladium catalyzed reaction of ortho-functionalized aryl iodides with bicyclic hydrazines: facile route toward heteroannulated cyclopentenes and azabicycles. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.10.053] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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25
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Transition metal catalyzed carboannulation of diazabicyclic alkenes with ambiphilic bifunctional reagents: a facile route towards functionalized indanones and indanols. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.04.087] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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26
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Jereb M, Vražič D, Zupan M. Iodine-catalyzed transformation of molecules containing oxygen functional groups. Tetrahedron 2011. [DOI: 10.1016/j.tet.2010.11.086] [Citation(s) in RCA: 134] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Prasad BAB, Buechele AE, Gilbertson SR. Pd-NHC catalyzed cyclopentannulation of diazabicyclic alkenes with ortho-aryl halides. Org Lett 2010; 12:5422-5. [PMID: 21043477 DOI: 10.1021/ol102270r] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Pd-NHC catalyzed cyclopentannulation of diazabicyclic alkenes with ortho- functionalized aryl halides is described. In all the reactions, a single diastereomer of the cyclopentannulated product is observed, and this reaction is very efficient under microwave irradiation.
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Affiliation(s)
- B A Bhanu Prasad
- Department of Chemistry, University of Houston, Houston, Texas 77204, USA
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28
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Palais L, Bournaud C, Micouin L, Alexakis A. Copper-catalysed ring opening of polycyclic meso-hydrazines with trialkylaluminium reagents and SimplePhos ligands. Chemistry 2010; 16:2567-73. [PMID: 20058279 DOI: 10.1002/chem.200902417] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
meso-Hydrazines could be desymmetrised by ring-opening reactions by using various metal catalysts to form substituted cyclopentenes, which have a high synthetic potential. Herein, we report the asymmetric copper-catalysed ring opening of a range of polycyclic hydrazines with trialkylaluminium reagents and SimplePhos ligands with both high isolated yields and enantioselectivities of up to 95 %.
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Affiliation(s)
- Laëtitia Palais
- Département de chimie organique, Université de Genève, 30 quai Ernest Ansermet, 1211 Geneve 4, Switzerland
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Palladium catalyzed ring opening of azabicyclic olefins with organoindium and gallium reagents: a facile access towards benzylated cyclopentanoids. Tetrahedron 2010. [DOI: 10.1016/j.tet.2009.11.112] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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30
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Machin BP, Ballantine M, Mandel J, Blanchard N, Tam W. Rhodium-catalyzed ring-opening reactions of a 3-aza-2-oxabicyclo[2.2.1]hept-5-ene with arylboronic acids. J Org Chem 2009; 74:7261-6. [PMID: 19731959 DOI: 10.1021/jo901248w] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Rhodium-catalyzed ring-opening reactions of a 3-aza-2-oxabicyclo[2.2.1]hept-5-ene with arylboronic acids were investigated. The use of [RhCl(COD)](2), (+/-)-BINAP, and NaHCO(3) in MeOH at 60 degrees C was found to be the optimized conditions for the ring-opening reactions to give the 1,2-ring-opened products. Various arylboronic acids were examined, and low to moderate yields were obtained and stereoselectivities (trans/cis) from 50:50 to 100:0 were observed.
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Affiliation(s)
- Ben P Machin
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1
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31
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Larkin JD, Markham GD, Milkevitch M, Brooks BR, Bock CW. Computational investigation of the oxidative deboronation of boroglycine, H2N-CH2-B(OH)2, Using H2O and H2O2. J Phys Chem A 2009; 113:11028-34. [PMID: 19810757 PMCID: PMC4219543 DOI: 10.1021/jp904149w] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report results from a computational investigation of the oxidative deboronation of boroglycine, H2N-CH2-B(OH)2, using H2O and H2O2 as the reactive oxygen species (ROS) to yield aminomethanol, H2N-CH2-OH; these results complement our study on the protodeboronation of boroglycine to produce methylamine, H2N-CH3 (Larkin et al. J. Phys. Chem. A 2007, 111, 6489-6500). Second-order Møller-Plesset (MP2) perturbation theory with Dunning-Woon correlation-consistent (cc) basis sets were used for the calculations with comparisons made to results from density functional theory (DFT) at the PBE1PBE/6-311++G(d,p)(cc-pVDZ) levels. The effects of a bulk aqueous environment were also incorporated into the calculations employing PCM and CPCM methodology. Using H2O as the ROS, the reaction H2O + H2N-CH2-B(OH)2 --> H2N-CH2-OH + H-B(OH)2 was calculated to be endothermic; the value of DeltaH(298)(0) was +12.0 kcal/mol at the MP2(FC)/cc-pVTZ computational level in vacuo and +13.7 kcal/mol in PCM aqueous media; the corresponding value for the activation barrier, DeltaH(double dagger), was +94.3 kcal/mol relative to the separated reactants in vacuo and +89.9 kcal/mol in PCM aqueous media. In contrast, the reaction H2O2 + H2N-CH2-B(OH)2 --> H2N-CH2-OH + B(OH)3 was calculated to be highly exothermic with an DeltaH(298)(0) value of -100.9 kcal/mol at the MP2(FC)/cc-pVTZ computational level in vacuo and -99.6 kcal/mol in CPCM aqueous media; the highest-energy transition state for the multistep process associated with this reaction involved the rearrangement of H2N-CH2-B(OH)(OOH) to H2N-CH2-O-B(OH)2 with a DeltaH(double dagger) value of +23.2 kcal/mol in vacuo relative to the separated reactants. These computational results for boroglycine are in accord with the experimental observations for the deboronation of the FDA approved anticancer drug bortezomib (Velcade, PS-341), where it was found to be the principle deactivation pathway (Labutti et al. Chem. Res. Toxicol. 2006, 19, 539-546).
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Affiliation(s)
- Joseph D. Larkin
- The National Institutes of Health, National Heart, Lung, and Blood Institute, 5635 Fishers Lane, Rockville, MD 20852
| | - George D. Markham
- The Institute for Cancer Research, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111
| | - Matt Milkevitch
- Department of Chemistry and Biochemistry, School of Science and Health, Philadelphia University, School House Lane and Henry Avenue, Philadelphia, PA 19144
| | - Bernard R. Brooks
- The National Institutes of Health, National Heart, Lung, and Blood Institute, 5635 Fishers Lane, Rockville, MD 20852
| | - Charles W. Bock
- Department of Chemistry and Biochemistry, School of Science and Health, Philadelphia University, School House Lane and Henry Avenue, Philadelphia, PA 19144
- The Institute for Cancer Research, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111
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John J, Indu U, Suresh E, Radhakrishnan KV. Palladium catalyzed tandem ring opening-ring closing reaction of diazabicyclic alkenes: a facile one pot strategy for cyclopentannulation of heterocycles. J Am Chem Soc 2009; 131:5042-3. [PMID: 19296680 DOI: 10.1021/ja900477e] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel palladium catalyzed protocol for the synthesis of cyclopentene fused heterocycles from diazabicyclic alkenes and ortho-functionalized aryliodides has been elaborated. The reaction can be tuned toward the formation of either 3,4-disubstituted cyclopentenes or cyclopentene fused heterocycles by careful manipulation of the reaction parameters. A number of cyclopentene fused benzofurans and indole derivatives were prepared in excellent yield by utilizing the developed methodology.
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Affiliation(s)
- Jubi John
- Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695 019, India
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Machin BP, Howell J, Mandel J, Blanchard N, Tam W. Ruthenium-Catalyzed Nucleophilic Ring-Opening Reactions of a 3-Aza-2-oxabicyclo[2.2.1]hept-5-ene with Alcohols. Org Lett 2009; 11:2077-80. [DOI: 10.1021/ol900454q] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ben P. Machin
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1, and Laboratoire de Chimie Organique et Bioorganique, ENSCMu, CNRS FRE 3253, Université de Haute-Alsace, 3 rue A. Werner, 68093 Mulhouse, Cedex, France
| | - Jennifer Howell
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1, and Laboratoire de Chimie Organique et Bioorganique, ENSCMu, CNRS FRE 3253, Université de Haute-Alsace, 3 rue A. Werner, 68093 Mulhouse, Cedex, France
| | - Jérémie Mandel
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1, and Laboratoire de Chimie Organique et Bioorganique, ENSCMu, CNRS FRE 3253, Université de Haute-Alsace, 3 rue A. Werner, 68093 Mulhouse, Cedex, France
| | - Nicolas Blanchard
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1, and Laboratoire de Chimie Organique et Bioorganique, ENSCMu, CNRS FRE 3253, Université de Haute-Alsace, 3 rue A. Werner, 68093 Mulhouse, Cedex, France
| | - William Tam
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1, and Laboratoire de Chimie Organique et Bioorganique, ENSCMu, CNRS FRE 3253, Université de Haute-Alsace, 3 rue A. Werner, 68093 Mulhouse, Cedex, France
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Crotti S, Bertolini F, Macchia F, Pineschi M. Sequential Copper-Catalyzed Rearrangement-Allylic Substitution of Bicyclic Hydrazines with Grignard Reagents. Adv Synth Catal 2009. [DOI: 10.1002/adsc.200900037] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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35
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Martins A, Lemouzy S, Lautens M. Bifunctional Reactivity of CuI: Sequential Ring Opening/N-Arylation. Org Lett 2008; 11:181-3. [DOI: 10.1021/ol802357e] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Andrew Martins
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Sébastien Lemouzy
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Mark Lautens
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
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Panteleev J, Menard F, Lautens M. Ligand Control in Enantioselective Desymmetrization of Bicyclic Hydrazines: Rhodium(I)-Catalyzed Ring-OpeningversusHydroarylation. Adv Synth Catal 2008. [DOI: 10.1002/adsc.200800587] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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37
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Anas S, Sajisha V, John J, Joseph N, George SC, Radhakrishnan K. Facile synthesis of alkylidene cyclopentenes via palladium catalyzed ring opening of fulvene derived bicyclic hydrazines. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.07.114] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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38
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Nair V, Biju A, Mathew S, Babu BP. Carbon–Nitrogen Bond-Forming Reactions of Dialkyl Azodicarboxylate: A Promising Synthetic Strategy. Chem Asian J 2008; 3:810-20. [DOI: 10.1002/asia.200700341] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Menard F, Lautens M. Chemodivergence in Enantioselective Desymmetrization of Diazabicycles: Ring-Opening versus Reductive Arylation. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200704708] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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40
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Menard F, Lautens M. Chemodivergence in Enantioselective Desymmetrization of Diazabicycles: Ring-Opening versus Reductive Arylation. Angew Chem Int Ed Engl 2008; 47:2085-8. [DOI: 10.1002/anie.200704708] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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41
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Crotti S, Bertolini F, Macchia F, Pineschi M. Rhodium-catalyzed enantioselective desymmetrization of bicyclic hydrazines with alkynylboronic esters. Chem Commun (Camb) 2008:3127-9. [DOI: 10.1039/b803693d] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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John J, Anas S, Sajisha V, Viji S, Radhakrishnan K. Palladium-catalyzed ring opening of azabicyclic olefins with organoindium reagents: a simple, clean, and efficient synthesis of functionalized cyclopentenes. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.07.168] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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43
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Anas S, John J, Sajisha VS, John J, Rajan R, Suresh E, Radhakrishnan KV. Iodine assisted palladium catalyzed ring opening of bicyclic hydrazines with organoboronic acids: stereoselective synthesis of functionalized cyclopentenes and alkylidene cyclopentenes. Org Biomol Chem 2007; 5:4010-9. [DOI: 10.1039/b714921b] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Bertolini F, Macchia F, Pineschi M. Rhodium-catalyzed asymmetric arylative ring opening of bicyclic hydrazines. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.10.153] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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