J. Ipaktschi et T. Eckert, LICLO4-PROMOTED ADDITION OF ALKYL GRIGNARD AND ALKYNYLLITHIUM REAGENTS TO KETONES - COMPARISON OF A 5 M LICLO4 DIETHYL ETHER SOLUTION WITH CECL3/, Chemische Berichte, 128(12), 1995, pp. 1171-1174
The influence of a 5 M ethereal LiClO4 solution as solvent on the addi
tion of different alkyl Grignard and alkynyllithium reagents of highly
enolizable ketones was studied. A comparison with the results in the
presence of CeCl3 shows a similar improvement in the yield.