Method of producing N-alkoxycarbonylpiperidine derivative,...

Details Method of producing N-alkoxycarbonylpiperidine derivative,... Method of producing N-alkoxycarbonylpiperidine derivative,...

2005-05-31

2005-05-31

Trinh, Ba K. (Department: 1625)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C546S189000, C546S190000, C546S191000

Reexamination Certificate

active

06900326

ABSTRACT:
A method of producing an N-alkoxycarbonylpiperidine derivative, comprising reacting an N-aralkylpiperidine derivative represented by the following general formula (1):wherein R1represents an aralkyl group which may have a substituent, with a mesyl halide in the presence of a base, thereby obtaining a mesylated product represented by the following general formula (2):wherein R1represents an aralkyl group which may have a substituent and Ms represents a mesyl group, andreacting the mesylated product with a dicarbonate represented by the following general formula (3):wherein R4represents an alkyl group, in the presence of hydrogen and a catalyst containing palladium, thereby obtaining an N-alkoxycarbonylpiperidine derivative represented by the following general formula (4):wherein R4represents an alkyl group and Ms represents a mesyl group.

REFERENCES:
patent: 6288233 (2001-09-01), Kuo et al.
patent: 6307048 (2001-10-01), Kuo et al.

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