A Facile Halogenative Cyclization of 4-(2-Benzothiazolyldithio)azetidinones (Kamiya’s Disulfide) into 2β-(Halomethyl)penams in a Two Layer System
作者:Hideo Tanaka、Motoaki Tanaka、Sho-zo Yamada、Akira Nakai、Hisashi Ohbayashi、Tadafumi Terada、Sigeru Torii
DOI:10.1246/bcsj.62.3046
日期:1989.9
2β-(chloromethyl)penams has been successfully performed by treatment with aqueous sodium nitrite in a two-layer solution comprising aqueous hydrochloric acid and dichloromethane layers. Similarly, the corresponding 2β-(bromomethyl)penams can be obtained by use of aqueous hydrobromic acid in place of aqueous hydrochloric acid.
通过在包含盐酸水溶液和二氯甲烷层的两层溶液中用亚硝酸钠水溶液处理,成功地将 4-(2-苯并噻唑基二硫代)氮杂环丁烷氯化环化成 2β-(氯甲基)penams。类似地,可以通过使用氢溴酸水溶液代替盐酸水溶液来获得相应的 2β-(溴甲基)青霉烯。