Catalytic process for eliminating carboxylic ester and acyl grou

Details Catalytic process for eliminating carboxylic ester and acyl grou Catalytic process for eliminating carboxylic ester and acyl grou

1995-03-01

1996-07-02

Haley, Jacqueline

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549425, 558435, 560120, C07D30732

Patent

active

055323863

ABSTRACT:
A process for preparing compounds of the formula I ##STR1## where: Y inter alia is ##STR2## where R.sup.3 is hydrogen or a C.sub.1 -C.sub.10 - hydrocarbon radical. R.sup.1 and R.sup.2, inter alia, are each, independently of one another, hydrogen, a C.sub.1 -C.sub.20 -hydrocarbon radical which optionally carries inert substituents or heteroaryl, wherein a compound of the formula II ##STR3## where Z is ##STR4## is reacted in the presence of catalytic amounts of a carbonic ester and of a nitrogenous base at from 100.degree. to 250.degree. C. under a pressure of from 0.01 to 100 bar.

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Chem. Abst. vol. 109, 14925 (1988).
Tetrahedron Lts. vol. 27, No. 15, p. 1639, (1986).
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Chem. Rev. 57, 191 (1957).
Arch. Pharm. 319, 25 (1986).

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