C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/324, 260/241
C07D 207/27 (2006.01) C07D 211/76 (2006.01) C07D 223/10 (2006.01)
Patent
CA 1315794
FDN-1532 MANUFACTURE OF HALOALKYL LACTAMS ABSTRACT A process for the manufacture of haloalkyl lactams having the formula Image wherein n is an integer having a value of from 1 to 3; m is an integer having a value of 1 or 2 and X is chlorine or bromine in the absence of an inert solvent by reacting a hydroxyalkyl lactam of the formula Image with a thionyl chloride or bromide in the liquid phase under anhydrous conditions, vaporizing and removing any excess thionyl halide along with SO2 by-product from the liquid reaction mixture under vacuum followed by vacuum distillation of the remaining liquid product mixture at a temperature below its decomposition and recovering said product. The product of this process can be obtained in greater than 90% yield and 99% purity. 0432P
559448
Rizzo Thomas
Tracy David J.
G. A. F. Corporation
Isp Investments Inc.
Rizzo Thomas
Smart & Biggar
Tracy David J.
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