1
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Yaragorla S, Sneha Latha D, Kumar R. Mechanochemical Regioselective [3+3] Annulation of 6-Amino Uracil with Propargyl Alcohols Catalyzed by a Brønsted Acid/Hexafluoroisopropanol. Chemistry 2024:e202401480. [PMID: 38727792 DOI: 10.1002/chem.202401480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Indexed: 06/19/2024]
Abstract
A mechanochemistry approach is developed for regioselective synthesis of functionalized dihydropyrido[2,3-d]pyrimidines by milling propargylic alcohols and 6-aminouracils with HFIP/p-TsOH. In the case of tert-propargyl alcohols, this [3+3] cascade annulation proceeded through allenylation of uracil followed by a 6-endo trig cyclization. With sec-propargyl alcohols, the reaction furnished the propargylation of uracil. This atom economy ball milling reaction allows access to a broad range of dihydropyrido[2,3-d]pyrimidine derivatives in excellent yields. We demonstrated the gram scale synthesis of 3 g and post-synthetic modifications to effect the cyclization of 5 to 6.
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Affiliation(s)
- Srinivasarao Yaragorla
- University of Hyderabad (an Institute of Eminence), P.O. Central University, Gachibowli, 500046, Hyderabad, Telangana State, India
| | - Dandugula Sneha Latha
- University of Hyderabad (an Institute of Eminence), P.O. Central University, Gachibowli, 500046, Hyderabad, Telangana State, India
| | - Rituraj Kumar
- University of Hyderabad (an Institute of Eminence), P.O. Central University, Gachibowli, 500046, Hyderabad, Telangana State, India
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2
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Jat RS, Bhanuchandra M. SOCl 2-Catalyzed Meyer-Schuster Rearrangement of 3°-Propargylic Alcohols: Synthesis of Densely Arene-Substituted Pyrazolines Bearing Quaternary Centers from α,β-Unsaturated Carbonyl Compounds and Arylhydrazines. J Org Chem 2023; 88:13184-13190. [PMID: 37669462 DOI: 10.1021/acs.joc.3c01387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
Meyer-Schuster rearrangement of 3°-propargyl alcohol to the corresponding α,β-unsaturated carbonyl compounds under SOCl2 catalysis has been reported. Terminal and internal propargyl alcohols efficiently participated in the reaction. Furthermore, we have demonstrated the synthetic utility of conjugated carbonyl compounds to access densely arene-substituted pyrazolines bearing quaternary centers by reacting with arylhydrazine hydrochloride. Isotopic labeling studies were carried out to gain insights into the reaction mechanism.
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Affiliation(s)
- Ram Singh Jat
- School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, Rajasthan 305817, India
| | - M Bhanuchandra
- School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, Rajasthan 305817, India
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3
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Prieto E, Martín JD, Nieto J, Andrés C. Enantioselective synthesis of 3-hydroxy- and 3-amino-3-alkynyl-2-oxindoles by the dimethylzinc-mediated addition of terminal alkynes to isatins and isatin-derived ketimines. Org Biomol Chem 2023; 21:6940-6948. [PMID: 37581278 DOI: 10.1039/d3ob01023f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
A common protocol for enantioselective alkynylation of isatins and isatin-derived ketimines using terminal alkynes and Me2Zn in the presence of a catalytic amount of a chiral perhydro-1,3-benzoxazine with moderate to excellent enantioselectivity under mild reaction conditions is described. The additions to ketimines present a novel approach to chiral amines being derivatives of oxindoles. The reaction is broad in scope with respect to aryl- and alkyl-substituted terminal alkynes and isatin derivatives. In isatins, the alkynylation occurs at the Si face of the carbonyl group, whereas in the ketimine derivatives it occurs at the Re face of the imine.
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Affiliation(s)
- Elena Prieto
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén, 7, 47011 Valladolid, Spain.
| | - Jorge D Martín
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén, 7, 47011 Valladolid, Spain.
| | - Javier Nieto
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén, 7, 47011 Valladolid, Spain.
| | - Celia Andrés
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén, 7, 47011 Valladolid, Spain.
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4
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Skoptsova AA, Shestakov AS, Ledenyova IV, Stolpovskaya NV, Podoplelova NA, Panteleev MA, Paponov BV, Sidorenko OE, Shikhaliev KS, Novichikhina NP. Reaction of 1‐Phenacylidene pyrrolo[3,2,1‐
ij
]quinolin‐2‐ones with Cyclic/Acyclic Enaminones and the Anticoagulant Activity of Synthesized Pyrrole‐Quinoline Derivatives. ChemistrySelect 2022. [DOI: 10.1002/slct.202200730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Anna A. Skoptsova
- Department of Organic Chemistry Voronezh State University 394018 Universitetskaya pl. 1 Voronezh Russia
| | - Alexander S. Shestakov
- Department of Organic Chemistry Voronezh State University 394018 Universitetskaya pl. 1 Voronezh Russia
| | - Irina V. Ledenyova
- Department of Organic Chemistry Voronezh State University 394018 Universitetskaya pl. 1 Voronezh Russia
| | - Nadezhda V. Stolpovskaya
- Department of Organic Chemistry Voronezh State University 394018 Universitetskaya pl. 1 Voronezh Russia
| | - Nadezhda A. Podoplelova
- Laboratory of Molecular Mechanisms of Hemostasis Center for Theoretical Problems of Physicochemical Pharmacology RAS 109029, Srednyaya Kalitnikovskaya st., 30 Moscow Russia
| | - Mikhail A. Panteleev
- Laboratory of Molecular Mechanisms of Hemostasis Center for Theoretical Problems of Physicochemical Pharmacology RAS 109029, Srednyaya Kalitnikovskaya st., 30 Moscow Russia
| | - Boris V. Paponov
- Department of General Chemistry Belgorod National Research University 308015, Pobedy st. 85 Belgorod Russia
| | - Oleg E. Sidorenko
- Department of Organic Chemistry Voronezh State University 394018 Universitetskaya pl. 1 Voronezh Russia
| | - Khidmet S. Shikhaliev
- Department of Organic Chemistry Voronezh State University 394018 Universitetskaya pl. 1 Voronezh Russia
| | - Nadezhda P. Novichikhina
- Department of Organic Chemistry Voronezh State University 394018 Universitetskaya pl. 1 Voronezh Russia
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5
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Yaragorla S, Latha DS. Chemo- and Stereoselective Synthesis of Substituted Thiazoles from tert-Alcohols Bearing Alkene and Alkyne Groups with Alkaline Earth Catalysts. ACS OMEGA 2022; 7:34693-34706. [PMID: 36188313 PMCID: PMC9520744 DOI: 10.1021/acsomega.2c05085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 09/05/2022] [Indexed: 06/16/2023]
Abstract
We report here that thioamides can distinguish C-C double bonds and C-C triple bonds chemoselectively when subjected to a reaction with pent-1-en-4-yn-3-ol derivatives in the presence of Ca(OTf)2. This protocol offers a fast, efficient, and high-yielding synthesis of functionalized thiazoles. Interestingly, this reaction offers a time-dependent formation of kinetic and thermodynamic products. The products showed stereoselectivity concerning the alkene geometry. Further, we extended this protocol to synthesize oxazoles from propargyl alcohols and ibuprofen (NSAID) was converted into amide and then subjected to oxazole formation with tert-propargyl alcohols.
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6
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Ferreira M, Munaretto LS, Gouvêa DP, Bortoluzzi AJ, Sa MM. Diversity‐Oriented Synthesis of 2‐Iminothiazolidines: Pushing the Boundaries of the Domino Nucleophilic Displacement/Intramolecular anti‐Michael Addition Process. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | | | | | | | - Marcus M. Sa
- Universidade Federal de Santa Catarina Chemistry campus Trindade 88040-900 Florianopolis BRAZIL
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7
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Yaragorla S, Latha DS, Rajesh P. Calcium‐Catalyzed Intramolecular Hydroamination‐Deacylation Reaction of in situ formed
β
‐Amino Allenes. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202101022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Srinivasarao Yaragorla
- School of Chemistry University of Hyderabad Prof. C. R. Rao Road, Gachibowli Hyderabad 500046 India
| | - Dandugula Sneha Latha
- School of Chemistry University of Hyderabad Prof. C. R. Rao Road, Gachibowli Hyderabad 500046 India
| | - Pallava Rajesh
- School of Chemistry University of Hyderabad Prof. C. R. Rao Road, Gachibowli Hyderabad 500046 India
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8
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Khan T, Rajesh P, Arun D, Yaragorla S. Stereoselective sulfenylation of oxindole-derived propargyl alcohols to access sulfenylated-3-alkenyloxindoles. Org Biomol Chem 2021; 19:10201-10209. [PMID: 34792078 DOI: 10.1039/d1ob01921j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Ca-catalyzed, tetrasubstituted alkenyl-sulfenylation was achieved using readily available aryl/alkyl thiols and easily prepared oxindole-derived propargyl alcohols under solvent-free conditions. The reaction proceeded with hydrogen bonding assisted regioselective α-thiolation and subsequent calcium catalyzed stereoselective alkenylation to yield E-alkenyl thioethers with high diastereoselectivity.
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Affiliation(s)
- Tabassum Khan
- School of Chemistry, University of Hyderabad, 500046, Telangana, India.
| | - Pallava Rajesh
- School of Chemistry, University of Hyderabad, 500046, Telangana, India.
| | - Doma Arun
- School of Chemistry, University of Hyderabad, 500046, Telangana, India.
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9
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Yang S, Bour C, Lebœuf D, Gandon V. DFT Analysis into the Calcium(II)-Catalyzed Coupling of Alcohols With Vinylboronic Acids: Cooperativity of Two Different Lewis Acids and Counterion Effects. J Org Chem 2021; 86:9134-9144. [PMID: 34152770 DOI: 10.1021/acs.joc.1c01263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The mechanism of the calcium-catalyzed coupling of alcohols with vinylboronic acids has been analyzed by means of density functional theory computations. This study reveals that the calcium and boron Lewis acids associate to form a superelectrophile able to promote a pericyclic group transfer reaction with allyl alcohols. With other alcohols, the two Lewis acids act synergistically to activate the OH functionality and trigger a SNi reaction pathway. These two mechanisms are affected by the nature of the counterions, which has been rationalized by electronic and steric factors.
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Affiliation(s)
- Shengwen Yang
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), CNRS UMR 8182, Université Paris-Sud, Université Paris-Saclay, Bâtiment 420, Orsay Cedex 91405, France.,Laboratoire de Chimie Moléculaire (LCM), CNRS UMR 9168, Ecole Polytechnique, Institut Polytechnique de Paris, Route de Saclay, Palaiseau Cedex 91128, France
| | - Christophe Bour
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), CNRS UMR 8182, Université Paris-Sud, Université Paris-Saclay, Bâtiment 420, Orsay Cedex 91405, France
| | - David Lebœuf
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), CNRS UMR 8182, Université Paris-Sud, Université Paris-Saclay, Bâtiment 420, Orsay Cedex 91405, France.,Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg, Strasbourg 67000, France
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), CNRS UMR 8182, Université Paris-Sud, Université Paris-Saclay, Bâtiment 420, Orsay Cedex 91405, France.,Laboratoire de Chimie Moléculaire (LCM), CNRS UMR 9168, Ecole Polytechnique, Institut Polytechnique de Paris, Route de Saclay, Palaiseau Cedex 91128, France
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10
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Justaud F, Hachem A, Grée R. Recent Developments in the Meyer‐Schuster Rearrangement. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001494] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Frédéric Justaud
- Univ Rennes CNRS (Institut for Chemical Sciences in Rennes), UMR 6226 35000 Rennes France
| | - Ali Hachem
- Lebanese University Faculty of Sciences (I) Laboratory for Medidinal Chemistry and Natural Products and PRASE-EDST Hadath Lebanon
| | - René Grée
- Univ Rennes CNRS (Institut for Chemical Sciences in Rennes), UMR 6226 35000 Rennes France
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11
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De R, Savarimuthu SA, Chandra S, Bera MK. Direct conversion of secondary propargyl alcohols into 1,3-di-arylpropanone via DBU promoted redox isomerization and palladium assisted chemoselective hydrogenation in a single pot operation. NEW J CHEM 2021. [DOI: 10.1039/d1nj02972j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Palladium(ii)acetate is found to be an efficient catalyst for the single-step conversion of secondary propargyl alcohols to 1,3-diarylpropanone derivatives under mild basic conditions.
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Affiliation(s)
- Rimpa De
- Department of Chemistry, Indian Institute of Engineering Science and Technology (IIEST), Shibpur P.O. – Botanic Garden, Howrah-711 103, WB, India
| | - S. Antony Savarimuthu
- Department of Chemistry, St. Xavier's College (Autonomous), Palayamkottai, Tamil Nadu-627 002, India
| | - Shubhadeep Chandra
- Institute of Inorganic Chemistry, Universitat Stuttgart, Pfaffenwaldring 55, D-, 70569, Stuttgart, Germany
| | - Mrinal K. Bera
- Department of Chemistry, Indian Institute of Engineering Science and Technology (IIEST), Shibpur P.O. – Botanic Garden, Howrah-711 103, WB, India
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12
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Vannada J, Sulthan M, Arun D, Dada R, Yaragorla S. Regiodivergent Synthesis of Penta-Substituted Pyrroles through a Cascade [3 + 2] Cyclization of C-Acylimines with Activated Alkynes and Aromatic Nucleophiles. J Org Chem 2020; 85:6697-6708. [PMID: 32319282 DOI: 10.1021/acs.joc.0c00712] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Highly robust one-pot, four-component cascade cyclization reaction of α-keto aldehydes, anilines, activated alkynes, and aromatic nucleophiles is developed to synthesize a diverse range of pharmaceutically important penta-substituted pyrroles. The reaction proceeds through the cascade cyclization of acylimines (in situ formed) with activated alkynes and aromatic nucleophiles such as indoles, pyrroles, and naphthols at room temperature under calcium(II) catalysis with high yields and broad substrate diversity.
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Affiliation(s)
- Jagadeshwar Vannada
- University College of Science, Osmania University, Saifabad, Hyderabad 500004, India
| | - Mahesh Sulthan
- School of Chemistry, University of Hyderabad, P.O.Central University, Hyderabad 500046, India.,University College of Science, Osmania University, Saifabad, Hyderabad 500004, India
| | - Doma Arun
- School of Chemistry, University of Hyderabad, P.O.Central University, Hyderabad 500046, India
| | - Ravikrishna Dada
- School of Chemistry, University of Hyderabad, P.O.Central University, Hyderabad 500046, India
| | - Srinivasarao Yaragorla
- School of Chemistry, University of Hyderabad, P.O.Central University, Hyderabad 500046, India
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13
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Latha DS, Yaragorla S. C(sp3
)-H Functionalization of 2-Methyl Azaarenes: Highly Facile Approach to Aza-Heterocyclic Compounds. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901899] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Dandugula Sneha Latha
- School of Chemistry; University of Hyderabad; P.O. Central University, Gachibowli; 500046 Hyderabad India
| | - Srinivasarao Yaragorla
- School of Chemistry; University of Hyderabad; P.O. Central University, Gachibowli; 500046 Hyderabad India
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14
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Sun Y, Hu M, Fu S, Liu B. Recent advances in alkaline earth metal-enabled syntheses of heterocyclic compounds. Org Biomol Chem 2020; 18:6443-6466. [DOI: 10.1039/d0ob01233e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review summarizes recent progress in alkaline earth metal enabled syntheses of heterocyclic compounds.
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Affiliation(s)
- Ying Sun
- Key Laboratory of Green Chemistry & Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- PR China
| | - Mengqin Hu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- PR China
| | - Shaomin Fu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- PR China
| | - Bo Liu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- PR China
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15
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Zhou NN, Ning SS, Tong XJ, Luo TT, Yang J, Li LQ, Fan MJ, Yang DS, Zhu HT. Brønsted-Acid-Catalyzed Synthesis of 3-Alkoxy and 3-Sulfamido Indanones via a Tandem Cyclization. J Org Chem 2019; 84:8497-8508. [DOI: 10.1021/acs.joc.9b00791] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Ni-Ni Zhou
- Shannxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Si-Si Ning
- Shannxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Xiao-Juan Tong
- Shannxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Ting-Ting Luo
- Shannxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Jin Yang
- Shannxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Lin-Qiang Li
- Shannxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Ming-Jin Fan
- Shannxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
| | - De-Suo Yang
- Shannxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Hai-Tao Zhu
- Shannxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
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16
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Khaja Mohinuddin PM, Dada R, Almansour AI, Arumugam N, Yaragorla S. Ca(II)-catalyzed diastereoselective formal [4+2] annulation of a 3-component solvent-free povarov reaction. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.03.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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