C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/102, 260/302
C07D 417/12 (2006.01) C07D 499/70 (2006.01) C07D 501/20 (2006.01)
Patent
CA 1268759
GC239 COPPER-MEDIATED OXIMATION REACTION ABSTRACT The presence of a copper salt during the oximation of a .beta.-lactam containing compound having glyoxylamino substituents of the formula Image by reaction with an aminooxy compound having the formula H2N-O-Ra or a salt or ester thereof, results in a product wherein the ratio of syn isomer to anti isomer is increased.
514285
Anderson Carl F.
Sedergran Thomas C.
E.r. Squibb & Sons Inc.
Osler Hoskin & Harcourt Llp
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