Appeal No. 1997-2797
Application 08/199,286
5. A process for the preparation of olefinically
unsaturated compounds of formula V
in which R' and R'' denote hydrogen or C-organic radicals
which comprises: reacting a "-
chloromethylene- triorganylphosphorane
derivative I
in which the radicals R can be the same or different and
denote C-organic substitutents and A stands for cyano or a
group CO-B where B is a C-organic or O-organic radical which
has from 1 to 12 carbon atoms and is inert under chlorination
conditions, with a carbonyl compound IV
-2-
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