Preparation of chlorine-substituted chloroformates

Details Preparation of chlorine-substituted chloroformates Preparation of chlorine-substituted chloroformates

C - Chemistry, Metallurgy

07

C

260/467

C07C 69/96 (2006.01) C07C 68/02 (2006.01)

Patent

CA 1119185

ABSTRACT OF THE DISCLOSURE This invention as disclosed provides a continuous process for producing chlorine-substituted chloroformates from phosgene and 1-2 epoxy ring compounds. The process comprises: (1) establishing a circulating stream of the chloroformate; (2) passing this stream through a catalyst bed of activated carbon; (3) injecting the phosgene and epoxy compound into the stream ahead of the catalyst, and (4) drawing off the chloroformate as product. The process gives a high yield of chlorine-substituted chloroformates, of a high degree of purity, and does not require added solvents. The product so obtained is useful in preparing flotation reagents and in other organic syntheses.

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