Alkatrienyl Sulfoxides and Sulfones. Part I. 3-Methyl-1,2,4-pentatrienyl Phenyl Sulfoxide-Synthesis and Electrophile-Induced Cyclization Reactions
作者:Valerij Ch. Christov、Ivaylo K. Ivanov
DOI:10.1080/10426500214293
日期:2002.10
3-methyl-1,2,4-pentatrienyl phenyl sulfoxide 3 by [2,3]-sigmatropic rearrangement of the 3-methyl-1-penten-4-yn-3-yl benzenesulfenate 2 , formed in the reaction of the 3-methyl-1-pentene-4-yn-2-ol 1 with phenylsulfenyl chloride has been created. Possibilities and restrictions of the five-membered heterocyclization in electrophile-induced reactions leading to the synthesis of the 5H-1,2-oxathiol-2-ium salts
一种通过3-甲基-1-戊烯-4-yn-3-基苯次磺酸盐2的[2,3]-σ重排合成3-甲基-1,2,4-戊三烯基苯基亚砜3的方法,在 3-methyl-1-pentene-4-yn-2-ol 1 与苯亚磺酰氯的反应中形成。已经探索了导致合成 5H-1,2-oxathiol-2-ium 盐 5、7 和 8 的亲电诱导反应中五元杂环化的可能性和限制。亚砜 2 的氯化继续进行,形成 (E)-2-氯-3-亚甲基-1,4-戊二烯基苯基亚砜 4,而溴化得到 4-溴-5H-1,2-oxathiol-2-溴化鎓 5 在 1,2-二氯乙烷中回流后除去溴化氢并转化为 (E)-2-溴-3-亚甲基-1,4-戊二烯基苯基亚砜 6。