Synthesis of substituted mercapto-benzaldehydes

Details Synthesis of substituted mercapto-benzaldehydes Synthesis of substituted mercapto-benzaldehydes

1999-02-10

2000-02-15

Powers, Fiona T.

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

Organic compounds

Sulfur containing

25218311, C07C31902, C07C32126

Patent

active

060255269

ABSTRACT:
Disclosed is a composition of (1) a substituted benzaldehyde having the general formula ##STR1## where X is a leaving group in the ortho or para position, (2) a mercaptide having the general formula MSR' in an amount about stoichiometric to about 20 mole % in excess of stoichiometric with the amount of said substituted benzaldehyde, where M is an alkali metal and R' is alkyl or haloalkyl from C.sub.1 to C.sub.8 or aryl, aralkyl, or alkyl from C.sub.6 to C.sub.12, (3) sufficient water to dissolve said mercaptide and MX, (4) about 0.1 to about 5 mole %, based on said substituted benzaldehyde, of a phase transfer catalyst, and (5) 0 to about 100 wt %, based on total composition weight, of a water-immiscible organic solvent. Heating the composition to a temperature between about room temperature and 100.degree. C. results in the formation of a substituted mercapto-benzaldehyde.

REFERENCES:
patent: 2761873 (1956-09-01), Gregory
patent: 4187319 (1980-02-01), Blohm et al.
patent: 5298630 (1994-03-01), Kagano et al.
Kagano et al., Chemical Abstracts, 124:55939, 1995.
English translation of JP 64-071,852, Mar. 16, 1989.

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