Document Type and Number:
Japanese Patent JPS563859
Kind Code:
B2
Abstract:
Aryl cyanates of formula R-(OCN)n (where R is >=1 opt. substd. aryl gps., which are bonded together by direct bonds, O, CO, OC(=O)O, S, SO2 or hydrocarbyl bridges; and n is 1-5) are prepd. by reacting an aq. soln. of the corresp. phenolate with a cyanogen halide dissolved in an org. solvent in the presence of a tert. amine, the two phase system being highly dispersed so that an interfacial reaction occurs. The process gives good yields of prods. having a high purity, as formation of by-prods. is minimised.
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Application Number:
JP11572875A
Publication Date:
January 27, 1981
Filing Date:
September 26, 1975
Export Citation:
International Classes:
C07C261/02; C07C67/00; C07C253/00; C07C317/14; G03B17/08; C07C
Next Patent: JPS563860