Alpha chlorination process employing antioxidants

Details Alpha chlorination process employing antioxidants Alpha chlorination process employing antioxidants

1984-06-29

1990-07-03

Warren, Charles F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

562840, 562847, 562857, C11C 300

Patent

active

049388983

ABSTRACT:
The present invention relates to improved processes for selectively chlorinating acyl compounds at the alpha or 2-position. The process of the present invention comprises a method of producing alpha-chloro acyl chlorides comprising contacting an acyl chloride with a chlorine source at a temperature of about 75.degree. C. to about 125.degree. C. in the presence of (i) an effective amount of an auxiliary acidic agent and (ii) an effective amount of a food grade antioxidant and optionally (iii) an effective amount of oxygen or air.

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Crawford, Robert J., Journal of Organic Chemistry, 48, pp. 1364-1368, (1976).
W. Theilheimer, Synthetic Methods of Organic Chemistry, vol. 16, pp. 271-272, John Wiley & Sons, 1961.

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