Method of preparing acylisocyanates

Details Method of preparing acylisocyanates Method of preparing acylisocyanates

1996-09-19

1998-03-31

Barts, Samuel

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

560347, 560340, C07D21172

Patent

active

057340609

ABSTRACT:
The invention relates to a novel process for the preparation of acyl isocyanates which consists in reacting oxalyl chloride with an N-trialkylsilylcarboxamide or an N,N-bis(trialkylsilyl)carboxamide.
The process makes it possible to obtain acyl isocyanates in good yield, in particular acyl isocyanates derived from aliphatic amides, and under simplified reaction conditions.

REFERENCES:
Database WPI, Week 7712, Derwent Publications Ltd., London, GB; AN 77-21324y XP002004594 & SU-A-498 290 (Tkachev A S), 14 Sep. 1976.
Chemical Abstracts, vol. 100, No. 7, 1984 Columbus, Ohio, US; abstract No. 51682q, XP002004593.
Zh. Obshch. Khim., vol. 53, No. 9, 1983, pp. 2155-2156, V.P. Kozyukov et al.
H. Hagemann: "Methoden Der Organischen Chemie (Houben-Weyl) Band E4, Kohlensaurederivate 1983, George Thieme Verlag, Stuttgart. New York XP002004592, p. 806-p. 808.

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