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A Novel Method for Furan Annelation by the Regioselective Acylation of Allylic Sulfides<i>via</i>α-Silyl Intermediates
作者:Kunio Hiroi、Hiroyasu Sato
DOI:10.1055/s-1987-28081
日期:——
Aluminum chloride-catalyzed acylations of allylic phenyl sulfides 3 with acid chlorides 5 were carried out via α-silyl intermediates 4 to give γ-acylated vinylic sulfides 6 with complete regioselectivity. Treatment of the γ-acylated compounds with concentrated sulfuric acid in refluxing benzene led to the formation of α-phenylthiofurans 7, which on reductive desulfurization with Raney nickel afforded various furan derivatives 8.
在
氯化铝催化下,烯丙基苯基
硫化物 3 与酸性
氯化物 5 通过δ-
硅中间体 4 发生酰化反应,从而得到δ-酰化的
乙烯基硫化物 6,且具有完全的区域选择性。在回流苯中用浓
硫酸处理δ-酰化化合物,可生成δ-苯
硫基
呋喃 7,再用雷尼
镍进行还原脱
硫,可得到各种
呋喃衍
生物 8。
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Hannaby, Malcolm; Warren, Stuart, Journal of the Chemical Society. Perkin transactions I, 1989, p. 303 - 311
作者:Hannaby, Malcolm、Warren, Stuart
DOI:——
日期:——
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Hiroi, Kunio; Sato, Hiroyasu; Chen, Lih-Ming, Chemical and pharmaceutical bulletin, 1987, vol. 35, # 4, p. 1413 - 1426
作者:Hiroi, Kunio、Sato, Hiroyasu、Chen, Lih-Ming、Kotsuji, Kumiko
DOI:——
日期:——
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Dehydration of alcohols with an adjacent phenylthio (PhS) group
作者:Malcolm Hannaby、Stuart Warren
DOI:10.1016/s0040-4039(00)98638-6
日期:1985.1
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HANNABY, MALCOLM;WARREN, STUART, J. CHEM. SOC. PERKIN TRANS. PT 1,(1989) N, C. 303-311
作者:HANNABY, MALCOLM、WARREN, STUART
DOI:——
日期:——