PROCESS FOR THE PREPARATION OF CYCLOHEXYL-AZETIDINONES

摘要

PCT No. PCT/EP95/01114 Sec. 371 Date Jan. 3, 1997 Sec. 102(e) Date Jan. 3, 1997 PCT Filed Mar. 23, 1995 PCT Pub. No. WO95/26333 PCT Pub. Date Oct. 5, 19951. A process for the preparation of compounds of formula (I) wherein R1 is a hydroxyl protecting group (I) which comprises reacting the azetidinone (II) with the homochiral (2S)-2- methoxycyclohexane (III) or the complex thereof formed with one molecule of stannic chloide. (II) (III)