Intramolecular [2+ 2] cycloadditions of ketene iminium salts to carbon-carbon double bonds

WT Brady, YSF Giang, L Weng…

Index: Brady, William T.; Giang, Yun-Seng F.; Weng, Lingling; Dad, Mohammad M. Journal of Organic Chemistry, 1987 , vol. 52, # 11 p. 2216 - 2220

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Citation Number: 18

Abstract

Intramolecular [2+ 21 cycloadditions of ketene iminium salts with carbon-carbon double bonds are compared with the corresponding intramolecular [2+ 21 ketene cycloadditions. The ketene cycloaddition process provides better yields than the ketene iminium salt method for ketoketenes. However, the aldoketene iminium salts give much better yields than the corresponding aldoketenes.