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Miranda LD, Icelo-Ávila E, Rentería-Gómez Á, Pila M, Marrero JG. A C-3-Selective Direct Alkylation of Coumarins by Using a Microwave-Assisted Xanthate-Based Radical Reaction. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500322] [Citation(s) in RCA: 12] [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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McBurney RT, Eisenschmidt A, Slawin AMZ, Walton JC. Rapid and selective spiro-cyclisations of O-centred radicals onto aromatic acceptors. Chem Sci 2013. [DOI: 10.1039/c3sc50500f] [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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Prasad DJC, Sekar G. An efficient copper-catalyzed synthesis of hexahydro-1H- phenothiazines. Org Biomol Chem 2009; 7:5091-7. [DOI: 10.1039/b916664e] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Majumdar KC, Debnath P, Maji PK. Radical-mediated cyclization reaction — Regioselective synthesis of pyrimidine- and coumarin-annulated [6,6]-fused oxygen heterocycles. CAN J CHEM 2008. [DOI: 10.1139/v08-087] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The n-Bu3SnH-AIBN mediated aryl radical cyclization of various 8-[(2-bromophenoxy)methyl]-1,3-dimethyl-2,3,4,6-tetrahydro-1H-pyrano[3,2-d]pyrimidine-2,4-diones and 1-[(2-bromophenoxy)methyl]-3,5-dihydropyrano[2,3-c]coumarins was investigated with the formation of [6,6]-fused oxygen heterocycles as a single regioisomer.Key words: n-Bu3SnH-AIBN, aryl radical cyclization, 6-endo-trig, oxygen heterocycles, coumarin derivatives, pyrimidine derivatives.
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