Ultrasound-Assisted Preparation of Di-tert-Butyl-, Di-1,1'-Adamantyl- and (1-Adamantyl)-tert-Butylketenes

Article abstract of DOI:10.1055/s-1989-27323

Di-tert-butyl-, di(1-adamantyl)-, and (1-adamantyl)-tert-butylketenes were prepared in excellent yield from their corresponding acetyl chlorides with triethylamine under ultrasonic irradiation, showing a dramatic improvement over attempted conventional dehydrochlorination.