Ylide chemistry. 2. Methylenedialkyloxonium ylides

GA Olah, H Doggweiler, JD Felberg

文献索引：Olah, George A.; Doggweiler, Hans; Felberg, Jeff D. Journal of Organic Chemistry, 1984 , vol. 49, # 12 p. 2112 - 2116

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被引用次数: 49

摘要

We report evidence for the long sought after methylenedialkyloxonium ylides from methyloxonium ions by two independent routes, proving their intermediate formation through derived product analysis. Reaction of trimethyloxonium salts with sodium hydride results in competing proton abstraction besides methane formation (hydride methylation). Subsequent methylation of the formed methylenedimethyloxonium ylide by excess trimethyloxonium ...