Sulfur monoxide transfer from peri-substituted trisulfide-2-oxides to dienes: substituent effects, mechanistic studies and application in thiophene synthesis

RS Grainger, B Patel, BM Kariuki, L Male…

Index: Oae, Shigeru; Nabeshima, Tatsuya; Takata, Toshikazu Heterocycles, 1982 , vol. 18, p. 41 - 44

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Citation Number: 20

Abstract

... Volume: Page: ... The heterocycle 2 is proposed to close to a cis-episulfoxide through a thermally allowed disrotatory 6π-electrocyclization, and the SO released is trapped with dienes in moderate yield.(10) Improved ... 5, SOCl 2 (1.45 equiv), py (1.14 equiv) c, 18, 55. ...

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