Method for preparing compounds derived from...

Details Method for preparing compounds derived from... Method for preparing compounds derived from...

2005-02-01

2005-02-01

Seaman, D. Margaret (Department: 1625)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C546S269700, C548S183000, C548S227000

Reexamination Certificate

active

06849741

ABSTRACT:
A method for preparing a thiazolidinedione, oxazolidinedione or hydantoin compound of formula (I) from a compound of formula (II):wherein Q represents an oxygen atom or a sulfur atom; Q1 represents an oxygen atom or a sulfur atom; R1 and R2, which can be identical or different, represent a hydrogen atom, a C1-10alkyl chain, a cycloalkyl, an alkylaryl, an arylalkyl; the alkyl, cycloalkyl, alkylaryl or arylalkyl groups being optionally substituted by an alkyl, an alkoxy or aryloxy, a halogen, a hydroxy, a sulfino, a sulfonyl, an amino such as NH2, NHR3, N(R3)2, wherein R3 represents an alkyl, an alkoxy or an alkylcarbonyl, reacting a compound of formula (II) with formic acid, either as a hydrogen donor in a hydrogen-transfer reaction or as a solvent in a hydrogenation reaction, in the presence of a catalyst containing a transition metal to obtain a corresponding compound of formula (I).

REFERENCES:
patent: 5399632 (1995-03-01), Costello et al.
patent: 5585495 (1996-12-01), Huber
patent: 5952509 (1999-09-01), Saito et al.
patent: 6100403 (2000-08-01), Saito et al.
patent: 197 11 616 (1998-09-01), None
patent: 0 257 781 (1988-03-01), None
patent: 0 454 501 (2001-09-01), None
patent: 2001011042 (2001-01-01), None
Clark, abstract 114:164084 of Chemical Abstracts, J Med chem, vol. 34(1), 1991, 319-325.*
R. Bar et al., Tetrahedron Letters, vol. 22, No. 18, 1981, pp. 1709-1710, Great Britan XP002172538.
Chemical Abstracts, vol. 131, No. 18, Nov. 1, 1999, abstract No. 242903, Columbus, OH, US XP002172539.

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