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Zalte RR, Festa AA, Raspertov PV, Storozhenko OA, Golantsov NE, Rybakov VB, Varlamov AV, Voskressensky LG. Chemoselective Divergent Transformations of N-(Propargyl)indole-2-carbonitriles with Nitrogen Nucleophiles: Alkyne Hydroamination or Domino Cyclizations. J Org Chem 2022; 87:13663-13671. [PMID: 36190820 DOI: 10.1021/acs.joc.2c01327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Interactions of N-(propargyl)indole-2-carbonitriles with nitrogen nucleophiles were studied. It was found that lithium hexamethyldisilazane (LiHMDS)-promoted reactions give mixtures of two product types, originating from an initial attack onto carbon-carbon or carbon-nitrogen triple bonds. Performing the reaction at reduced temperature and in the presence of catalytic amounts of LiHMDS delivered alkyne hydroamination products exclusively. On the contrary, the one-pot reaction of N-(propargyl)indole-2-carbonitriles with methanol and LiHMDS on heating, followed by the addition of a nitrogen nucleophile, allowed a selective domino cyclization sequence toward 1-aminopyrazino[1,2-a]indoles. Anilines and nitrogen heterocycles could be employed as N-nucleophiles to obtain products of both types. Moreover, an alternative one-pot route toward a third product type has been developed. When N-(propargyl)indole-2-carbonitrile was first combined with aniline and LiHMDS at reduced temperature, further heating of the in situ generated hydroamination product led to the intramolecular cyclization into 1-imino-2-phenylpyrazino[1,2-a]indoles. Thus, chemodivergent transformations of the same starting material into three compound classes were investigated. The possible reaction routes were studied, and N-(allenyl)indole-2-carbonitrile was identified as the key intermediate. Acyclic and cyclic products exhibit fluorescence emission in the blue to green range.
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Affiliation(s)
- Rajesh R Zalte
- Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, Moscow 117198, Russia
| | - Alexey A Festa
- Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, Moscow 117198, Russia
| | - Pavel V Raspertov
- Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, Moscow 117198, Russia
| | - Olga A Storozhenko
- Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, Moscow 117198, Russia
| | - Nikita E Golantsov
- Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, Moscow 117198, Russia
| | - Victor B Rybakov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1-3, Moscow 119991, Russia
| | - Alexey V Varlamov
- Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, Moscow 117198, Russia
| | - Leonid G Voskressensky
- Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, Moscow 117198, Russia
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Surya Prakash Rao H, Prabhakaran J. Palladium-catalyzed intramolecular C–N coupling: Facile synthesis of tetracyclic C(3)-aminoisoindolinones. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2095647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- H. Surya Prakash Rao
- Department of Chemistry, Pondicherry University, Puducherry, India
- Vasista Pharma Chem Pvt Limited, Hyderabad, India
| | - J. Prabhakaran
- Department of Chemistry, Pondicherry University, Puducherry, India
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Vani I, Sireesha R, Goud PVK, Prasad KR, Bhuvan Tej M, Sai Praneeth M, Rao MVB. Synthesis of Nitroethylindole Derivatives through Michael Addition. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2021.1995009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Inavolu Vani
- Department of Chemistry, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Andhra, Pradesh, India
| | - Reddymasu Sireesha
- Department of Chemistry, Acharya Nagarjuna University, Nagarjuna Nagar, Andhra Pradesh, India
| | | | | | - Mandava Bhuvan Tej
- Department of Pharmacy, Sri Ramachandra Institute of Higher Education and Research, Sri Ramachandra Nagar, Porur, Chennai, Tamilnadu, India
| | - Muthineni Sai Praneeth
- Department of Pharmacy, Final MBBS Part – 2, Mamata Medical College, Khammam, Telangana, India
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Mishra P, Chatterjee S, Verma AK. 2-Alkynylarylnitrile: An Emerging Precursor for the Generation of Carbo- and Heterocycles. ACS OMEGA 2020; 5:32133-32139. [PMID: 33376851 PMCID: PMC7758905 DOI: 10.1021/acsomega.0c04242] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 11/27/2020] [Indexed: 06/12/2023]
Abstract
In the pursuit of a coherent synthetic route for the synthesis of carbo- and heterocycles, 2-alkynylarylnitrile has been recognized as a useful and versatile building block in organic synthesis due to the dual capacity of this precursor to act with a nucleophilic of electrophilic nature. The alkynes implanted at the ortho position improved the reactivity of the substrate for tandem cyclization and annulations, which led to the synthesis of diverse and complex cyclic compounds. This mini review summarizes the literature on the synthetic transformations of 2-alkynylarylnitrile into biologically relevant heterocycles as well as carbocycles such as isoindoles, isoquinolines, naphthalenes, and indenones as well as building blocks for the synthesis of various natural products. We hope that this concise review will be a promissory entry for future research in this area.
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Zhang Y, Liu JQ, Wang XS. Copper(I)-catalyzed synthesis of isoindolo[1,2-b]quinazoline derivatives via an α-arylation under Pd and ligand free conditions. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Campbell MV, Iretskii AV, Mosey RA. One-Pot Tandem Assembly of Amides, Amines, and Ketones: Synthesis of C4-Quaternary 3,4- and 1,4-Dihydroquinazolines. J Org Chem 2020; 85:11211-11225. [PMID: 32786625 DOI: 10.1021/acs.joc.0c01308] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A multicomponent tandem assembly procedure for the synthesis of diverse C4-quaternary 3,4-dihydroquinazolines from amides, amines, and ketones has been developed. The one-pot reaction involves successive triflic anhydride mediated amide dehydration, ketimine addition, and Pictet-Spengler-like cyclization processes and affords products in up to 92% yield. Conversion of 3,4-dihydroquinazolines to the corresponding 1,4-dihydroquinazolines via a two-step N1 dealkylation and regioselective N3 functionalization protocol, including computational rationale for the observed regioselectivity, is also described.
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Affiliation(s)
- Molly V Campbell
- Department of Chemistry, Lake Superior State University, Sault Sainte Marie, Michigan 49783, United States
| | - Alexei V Iretskii
- Department of Chemistry, Lake Superior State University, Sault Sainte Marie, Michigan 49783, United States
| | - R Adam Mosey
- Department of Chemistry, Lake Superior State University, Sault Sainte Marie, Michigan 49783, United States
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Jaganmohan C, K. P. VK, R. V, Mohanty S, Kumar J, B. VR, Raghunadh A, Tadiparthi K. A novel approach for the synthesis of functionalized hydroxylamino derivative of dihydroquinazolinones. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1768406] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Chikkanti Jaganmohan
- Dr. Reddy’s Laboratories Limited, Hyderabad, India
- Department of Organic Chemistry and FDW, Andhra University, Visakhapatnam, India
| | | | | | | | | | - Venkateswara Rao B.
- Department of Organic Chemistry and FDW, Andhra University, Visakhapatnam, India
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Venkateshwarlu R, Murthy VN, Tadiparthi K, Nikumbh SP, Jinkala R, Siddaiah V, Madhu Babu MV, Rama Mohan H, Raghunadh A. Base mediated spirocyclization of quinazoline: one-step synthesis of spiro-isoindolinone dihydroquinazolinones. RSC Adv 2020; 10:9486-9491. [PMID: 35497232 PMCID: PMC9050170 DOI: 10.1039/c9ra09567e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Accepted: 02/19/2020] [Indexed: 11/21/2022] Open
Abstract
A novel approach for the spiro-isoindolinone dihydroquinazolinones has been demonstrated from 2-aminobenzamide and 2-cyanomethyl benzoate in the presence of KHMDS as a base to get moderate yields. The reaction has been screened in various bases followed by solvents and a gram scale reaction has also been executed under the given conditions. Based on the controlled experiments a plausible reaction mechanism has been proposed. Further the substrate scope of this reaction has also been studied. A novel approach for the spiro-isoindolinone dihydroquinazolinones has been demonstrated from 2-aminobenzamide and 2-cyanomethyl benzoate in the presence of KHMDS as a base to get moderate yields.![]()
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Affiliation(s)
- Rapolu Venkateshwarlu
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy's Laboratories Ltd. Hyderabad 500049 India.,Department of Organic Chemistry and FDW, Andhra University Visakhapatnam 530045 India
| | - V Narayana Murthy
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy's Laboratories Ltd. Hyderabad 500049 India
| | - Krishnaji Tadiparthi
- Department of Chemistry, CHRIST (Deemed to be University) Hosur Road Bengaluru 560029 India
| | - Satish P Nikumbh
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy's Laboratories Ltd. Hyderabad 500049 India
| | - Rajesh Jinkala
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy's Laboratories Ltd. Hyderabad 500049 India
| | - Vidavalur Siddaiah
- Department of Organic Chemistry and FDW, Andhra University Visakhapatnam 530045 India
| | - M V Madhu Babu
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy's Laboratories Ltd. Hyderabad 500049 India
| | - Hindupur Rama Mohan
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy's Laboratories Ltd. Hyderabad 500049 India
| | - Akula Raghunadh
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy's Laboratories Ltd. Hyderabad 500049 India
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Setikam PK, Valavala NM, Komanduri RG, Rapolu V, Golagani SR, Tadiparthi K, Akula R. A New Facile Iodine-Promoted One-Pot Synthesis of Dihydroquinazolinone Compounds. ChemistrySelect 2018. [DOI: 10.1002/slct.201800695] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Narayana Murthy Valavala
- Technology Development Centre, Custom Pharmaceutical Services; Dr. Reddy's Laboratories Ltd; Hyderabad 500049 INDIA
| | - Ravi Ganesh Komanduri
- Technology Development Centre, Custom Pharmaceutical Services; Dr. Reddy's Laboratories Ltd; Hyderabad 500049 INDIA
| | - Venkateshwarlu Rapolu
- Technology Development Centre, Custom Pharmaceutical Services; Dr. Reddy's Laboratories Ltd; Hyderabad 500049 INDIA
| | | | - Krishnaji Tadiparthi
- Department of Chemistry; CHRIST (Deemed to be University); Hosur Road Bangalore 560029 INDIA
| | - Raghunadh Akula
- Technology Development Centre, Custom Pharmaceutical Services; Dr. Reddy's Laboratories Ltd; Hyderabad 500049 INDIA
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Murthy VN, Nikumbh SP, Tadiparthi K, Madhubabu MV, Jammula SR, Rao LV, Raghunadh A. Amberlite-15 promoted an unprecedented aza Michael rearrangement for one pot synthesis of dihydroquinazolinone compounds. RSC Adv 2018; 8:22331-22334. [PMID: 35558548 PMCID: PMC9092434 DOI: 10.1039/c8ra03308k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 05/24/2018] [Indexed: 02/01/2023] Open
Abstract
A new one pot multicomponent annulation strategy for the synthesis of various dihydroquinazolinone compounds has been developed using Amberlite-15 as a catalyst, giving good to moderate yields. In this reaction the substrate scope for amines and aldehydes was also investigated. The reaction has been checked on a large scale and the possible reaction mechanism has also been proposed.
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Affiliation(s)
- V Narayana Murthy
- Technology Development Centre, Custom Pharmaceutical Services, Dr Reddy's Laboratories Ltd Hyderabad 500049 India .,Department of Chemistry, GIS, Gitam University Visakhapatnam 530045 India
| | - Satish P Nikumbh
- Technology Development Centre, Custom Pharmaceutical Services, Dr Reddy's Laboratories Ltd Hyderabad 500049 India
| | | | - M V Madhubabu
- Technology Development Centre, Custom Pharmaceutical Services, Dr Reddy's Laboratories Ltd Hyderabad 500049 India
| | - Subba Rao Jammula
- Technology Development Centre, Custom Pharmaceutical Services, Dr Reddy's Laboratories Ltd Hyderabad 500049 India
| | - L Vaikunta Rao
- Department of Chemistry, GIS, Gitam University Visakhapatnam 530045 India
| | - Akula Raghunadh
- Technology Development Centre, Custom Pharmaceutical Services, Dr Reddy's Laboratories Ltd Hyderabad 500049 India
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11
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One pot oxidative dehydration - oxidation of polyhydroxyhexanal oxime to polyhydroxy oxohexanenitrile: A versatile methodology for the facile access of azasugar alkaloids. Carbohydr Res 2016; 435:1-6. [DOI: 10.1016/j.carres.2016.09.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 09/05/2016] [Accepted: 09/06/2016] [Indexed: 12/21/2022]
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12
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Metal–Catalyst-Free Green and efficient synthesis of five and six membered fused N-heterocyclic quinazoline derivatives. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.09.094] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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