Malonic acid monomethyl derivatives and production process...

Details Malonic acid monomethyl derivatives and production process... Malonic acid monomethyl derivatives and production process...

2007-04-24

2007-04-24

Zucker, Paul A. (Department: 1621)

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

Organic compounds

Carboxylic acid esters

Reexamination Certificate

active

11486116

ABSTRACT:
A novel monomethyl malonate derivative is represented by following Formula (I):wherein X is a halogen atom; and Me is methyl group. This compound can be prepared by the steps of (A) reacting a benzyl halide derivative represented by following Formula (II):wherein X and Y may be the same as or different from each other and are each a halogen atom, with dimethyl malonate in the presence of a base to yield a dimethyl malonate derivative represented by following Formula (III):wherein X and Me have the same meanings as defined above; and (B) hydrolyzing the dimethyl malonate derivative of Formula (III). The compound is useful in the production of an indanonecarboxylic acid ester having a halogen atom on the indanone ring.

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