Patent ID: 6180835
Filing Date: 2001-01-30
Classification: C07C,C07D,Y02P

Abstract:
A process for the preparation of a cyclopropylacetylene compound of formula (V): ##STR14##wherein each of R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 is hydrogen; or an alkyl, alkenyl, aryl or aralkyl group, each of which may have a substituent, which comprises the step of:subjecting a cyclopropylpropynol compound of formula (IV): ##STR15##wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 have the same meanings as defined above, and each of R.sup.6 and R.sup.7 is hydrogen; or an alkyl, alkenyl, aryl or aralkyl group, each of which may have a substituent, or R.sup.6 and R.sup.7 taken together form a ring, to retro-ethynylation.