Intramolecular Dehydration of Dialkylacetic Acids and Trimethylsilylacetic Acid with Dicyclohexylcarbodiimide to the Corresponding Stable Ketenes
作者:George A. Olah、An-hsiang Wu、Omar Farooq
DOI:10.1055/s-1989-27324
日期:——
A new, simple preparation for stable dialkyl ketenes involving intramolecular dehydration of appropriately substituted acetic acids with dicyclohexylcarbodiimide (DCC) in the presence of catalytic amounts of triethylamine gives 60-70% yield of the corresponding ketenes. Trimethylsilylacetic acid also gives trimethylsilylketene in good yield.