Patent ID: 6127583
Filing Date: 2000-10-03
Classification: C07B,C07C

Abstract:
A preparation process of an acetylene compound from a ketone compound comprising reacting a ketone compound having a backbone represented by the formula (1) ##STR31## in the molecular formula with a compound represented by the formula (2) ##STR32## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are individually an alkyl group having 1 to 6 carbon atoms and are the same or different, R.sup.1 and R.sup.2 are individual groups or are bonded to each other to form a ring, and R.sup.1 and R.sup.2 or R.sup.3 and R.sup.4 are individual groups or are bonded to each other respectively to form one or two heterocyclic rings: or with a compound represented by the formula (3) ##STR33## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are the same as in the formula (2), and X.sub.1 is a chlorine, bromine or iodine atom.