Patent ID: 6025526
Filing Date: 2000-02-15
Classification: C07C

Abstract:
A method of making a substituted mercapto-benzaldehyde by reacting a substituted benzaldehyde with a mercaptide comprising(A) preparing a composition which comprises(1) a mercaptide having the general formula MSR', where M is an alkali metal and R' is alkyl or haloalkyl from C.sub.1 to C.sub.8 or aryl, alkaryl, or aralkyl from C.sub.6 to C.sub.12, in an amount about stoichiometric to about 20 mole % in excess of stoichiometric with the amount of said substituted benzaldehyde to be reacted; and(2) sufficient water to dissolve said mercaptide and MX;(3) about 0.1 to about 5 mole %, based on said substituted benzaldehyde, of a phase transfer catalyst; and(4) 0 to about 100 wt %, based on total composition weight, of a water-immiscible organic solvent;(B) heating said composition to a temperature between about room temperature and about 100.degree. C.;(C) melting a solid substituted benzaldehyde having the general formula: ##STR3## where X is a leaving group in the ortho or para position; and (D) metering said melted substituted benzaldehyde into said composition.