Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Reexamination Certificate
2005-07-12
2005-07-12
Tsang, Cecilia J. (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
C562S840000
Reexamination Certificate
active
06916946
ABSTRACT:
Disclosed is a novel acid halide derivative represented by Formula (I):wherein X and Y may be the same or different and are each a halogen atom; and R is a lower alkyl group. By cyclizing the acid halide derivative of Formula (I) in the presence of a catalyst, an indanonecarboxylic acid ester represented by Formula (VI):wherein X and R are as defined above, is produced. Such indanonecarboxylic acid esters are useful as intermediates for insecticides.
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Hamatani Takeshi
Nose Satoru
Sano Kieko
Yamagiwa Syu-ichi
Daicel Chemical Industries Ltd.
Oh Taylor Victor
Tsang Cecilia J.
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