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Reddy UC, Bondalapati S, Saikia AK. Stereoselective Synthesis of 2,6-Disubstituted-4-Aryltetrahydropyrans Using Sakurai-Hosomi-Prins-Friedel-Crafts Reaction. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900006] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Yadav J, Reddy BS, Chaya D, Kumar GN, Naresh P, Jagadeesh B. Heteropoly acid-catalyzed aza-Prins-cyclization: an expeditious synthesis of 4-hydroxypiperidines. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.01.148] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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53
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Barbero M, Bazzi S, Cadamuro S, Dughera S. o-Benzenedisulfonimide as a Reusable Brønsted Acid Catalyst for Ritter-Type Reactions. European J Org Chem 2009. [DOI: 10.1002/ejoc.200800931] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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C. Majumdar K, Debnath P, Roy B. Metal-Catalyzed Heterocyclization: Formation of Five- and Six-Membered Oxygen Heterocycles through Carbon-Oxygen Bond Forming Reactions. HETEROCYCLES 2009. [DOI: 10.3987/rev-09-656] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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55
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Lakouraj MM, Mokhtary M. Polyvinylpolypyrrolidone-supported boron trifluoride: a high-loaded, polymer-supported Lewis acid for the Ritter reaction. MONATSHEFTE FUR CHEMIE 2008. [DOI: 10.1007/s00706-008-0007-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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56
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Gallium iodide/iodine as a versatile reagent for the aza-Prins cyclization: an expeditious synthesis of 4-iodopiperidines. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.03.006] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Karmakar P, Ghosh T, Chakrabarty D, Maiti S, Bandyopadhyay C. Synthesis and Reactivity of 3-(1-hydroxy-3-buten-1-yl)chromone. JOURNAL OF CHEMICAL RESEARCH 2008. [DOI: 10.3184/030823408x314437] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Zn-induced allylation of chromone-3-carbaldehyde 1 produces 3-(1-hydroxy-3-butene-1-yl)chromone 2, which gives back 1 on treatment with formalin under acidic conditions, and reacts differently towards nitrogenous nucleophiles.
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Affiliation(s)
- Partha Karmakar
- Department of Chemistry, R. K. Mission Vivekananda Centenary College, Rahara, Kolkata 700 118, West Bengal, India
| | - Tarun Ghosh
- Department of Chemistry, R. K. Mission Vivekananda Centenary College, Rahara, Kolkata 700 118, West Bengal, India
| | - Debasish Chakrabarty
- Department of Chemistry, R. K. Mission Vivekananda Centenary College, Rahara, Kolkata 700 118, West Bengal, India
| | - Sourav Maiti
- Department of Chemistry, R. K. Mission Vivekananda Centenary College, Rahara, Kolkata 700 118, West Bengal, India
| | - Chandrakanta Bandyopadhyay
- Department of Chemistry, R. K. Mission Vivekananda Centenary College, Rahara, Kolkata 700 118, West Bengal, India
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Reddy UC, Raju BR, Kumar EKP, Saikia AK. Stereoselective One-Pot, Three-Component Synthesis of 4-Amidotetrahydropyran. J Org Chem 2008; 73:1628-30. [DOI: 10.1021/jo7023366] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- U. C. Reddy
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - B. Rama Raju
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - E. K. Pramod Kumar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Anil K. Saikia
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
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59
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In(OTf)3-catalyzed synthesis of 4-thiocyanotetrahydropyrans via a three-component reaction. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.10.047] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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60
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Yadav J, Subba Reddy B, Maity T, Narayana Kumar G. A diastereoselective synthesis of 4-azidotetrahydropyrans via the Prins-cyclization. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.07.195] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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