FACILE SYNTHESIS OF (S)-BETA-HYDROXY-BETA-TRICHLOROMETHYLATED AROMATIC KETONES BY THE REGIOSELECTIVE RING-CLEAVAGE OF CHIRAL BETA-TRICHLOROMETHYL-BETA-PROPIOLACTONE UNDER THE FRIEDEL-CRAFTS CONDITIONS
T. Fujisawa et al., FACILE SYNTHESIS OF (S)-BETA-HYDROXY-BETA-TRICHLOROMETHYLATED AROMATIC KETONES BY THE REGIOSELECTIVE RING-CLEAVAGE OF CHIRAL BETA-TRICHLOROMETHYL-BETA-PROPIOLACTONE UNDER THE FRIEDEL-CRAFTS CONDITIONS, Tetrahedron letters, 38(9), 1997, pp. 1593-1596
The reaction of enantiomerically pure beta-trichloromethyl-beta-propio
lactone (1) as a chiral building block with an aromatic compound in th
e presence of Lewis acid provided an acylated product with a chiral tr
ichloromethyl carbinol moiety. The acylated product was used as an eff
ective chiral synthon for natural product synthesis such as enalapril
of ACE inhibitor. (C) 1997 Elsevier Science Ltd.