Process for the preparation of arlazotetronic acid derivatives

Details Process for the preparation of arlazotetronic acid derivatives Process for the preparation of arlazotetronic acid derivatives

1997-09-03

1998-09-15

Powers, Fiona T.

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

Organic compounds

Azo

534753, 549313, C07D30733

Patent

active

058080147

ABSTRACT:
A process for the preparation of arylazotetronic acid derivatives of the general formula: ##STR1## in which a 3-chloro-4-hydroxy-2(5H)-furanone of the formula: ##STR2## is diazotized. The arylazotetronic acid derivatives are important intermediates in the preparation of (+)-biotin.

REFERENCES:
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patent: 4851540 (1989-07-01), McGarrity et al.
patent: 5162540 (1992-11-01), McGarrity et al.
patent: 5298658 (1994-03-01), Fabricius
Tanaka et al., Chem. Pharm. Bull., 32(8), 3291-3298, (1984).
Meul et al., Chemical Abstracts, 108:55 786 (1988).

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