Reactions of cyclic sulfur ylides with s
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Hitoshi Akiyama; Katsuyoshi Ohshima; Tetsuya Fujimoto; Iwao Yamamoto; Ryozo Iriy
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Article
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2002
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John Wiley and Sons
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English
β 161 KB
## Abstract The reaction of a sixβmembered sulfonium ylide **5** with aldehydes or ketones afforded the oxirane derivatives **6aβd** as a mixture of cis and trans isomers in excellent yields. In addition, the same reactions, using fiveβ or sixβmembered cyclic oxosulfonium ylides **7** and **11**, g