Method of preparing sulfonyl isocyanates

Details Method of preparing sulfonyl isocyanates Method of preparing sulfonyl isocyanates

1983-09-20

1985-05-14

Siegel, Alan

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C15300

Patent

active

045171335

ABSTRACT:
Sulfonyl isocyanates having the formula R--SO.sub.2 --NCO (wherein R is a C.sub.1 - to C.sub.18 - alkyl radical, a phenyl radical, a C.sub.1 - to C.sub.18 - alkyl phenyl radical or an isocayanate group) are obtained in high yield and excellent purity by reaction of the corresponding sulfonyl chlorides R--SO.sub.2 --Cl with trimethyl silyl isocynate in the presence of catalytic amounts of Lewis acids. The preferred Lewis acids are halides having the formula AX.sub.n (A=B, Al, Ti, Sn, V, Sb, Fe or Zn; n=valence of A).

REFERENCES:
patent: 2974164 (1961-03-01), Franz

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