Reaction of Enol Ethers with Carbenes. X. Ring Opening of 2,2-Dichlorocyclopropyl Phenyl Sulfides
作者:William E. Parham、Shoji Kajigaeshi、Siemen H. Groen
DOI:10.1246/bcsj.45.509
日期:1972.2
The ring opening reactions of six known or new 2,2-dichlorocyclopropyl phenyl sulfides have been carried out with potassium t-butoxide in t butyl alcohol and with pyridine. The products were enynes, butadienes, allenes and, as minor products, α,β-unsaturated aldehydes containing the phenylmercapto group. Reaction of a mixture of cis- and trans-1,1-dichloro-2-methyl-3-phenylmercaptocyclopropane (2)
六种已知或新的 2,2-二氯环丙基苯基硫醚的开环反应已与叔丁醇钾和吡啶在叔丁醇中进行。产物是烯炔、丁二烯、丙二烯和作为次要产物的含有苯基巯基的α,β-不饱和醛。顺式和反式-1,1-二氯-2-甲基-3-苯基巯基环丙烷(2)的混合物与吡啶的反应得到未改变的反式异构体。这种表观选择性是基于开环的空间效应来解释的。