Trialkylsilyl esters of 6(substituted amino)phenyl-1,-dihydro-2-

Details Trialkylsilyl esters of 6(substituted amino)phenyl-1,-dihydro-2- Trialkylsilyl esters of 6(substituted amino)phenyl-1,-dihydro-2-

1974-11-21

1976-04-20

Gallagher, R. J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2602391, 260243C, 2602472A, 2602472B, 26029364, 26029369, 2602955R, 424250, C07D29512

Patent

active

039519821

ABSTRACT:
Trialkylsilyl esters of 6-(substituted amino)phenyl-1,2-dihydro-2-oxonicotinic acid and acid addition salts thereof are disclosed. The compounds are useful intermediates in the preparation of pharmacological agents, especially antimicrobials of the penicillin or cephalosporin type. The compounds can be produced by reacting a 6-(substituted amino)phenyl-1,2-dihydro-2-oxonicotinic acid with a silylating agent and are converted to the useful corresponding acid chloride by reaction with thionyl chloride.

REFERENCES:
patent: 3249622 (1966-05-01), Herrling et al.
patent: 3478018 (1969-11-01), Robinson et al.
patent: 3809699 (1974-05-01), Toshiyasu Ishimaru

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