PROCESS FOR THE PREPARATION OF THIOL COMPOUNDS

Title:

PROCESS FOR THE PREPARATION OF THIOL COMPOUNDS

Document Type and Number:

WIPO Patent Application WO/1997/033865

Kind Code:

A1

Abstract:

A process for preparing thiol compounds of general formula (2): HS-CH2-CHR1-COOR2 (wherein R1 is H or methyl and R2 is H or a C1-C18 hydrocarbyl) by reacting an unsaturated compound of general formula (1): CH2=CR1-COOR2 (wherein R1 and R2 are each as defined above) with hydrogen sulfide, wherein at least one nitrogenous compound selected from the group consisting of amide compounds each bearing an unsubstituted amode group, amide compounds each bearing an N-substituent C1-C6 hydrocarbyl, urea compounds each bearing an unsubstituted ureylene group, and urea compounds each substituted with a C1-C6 hydrocarbyl at at least either of the N- and N'-positions is present in the reaction system with a polysulfide compound of general formula (3): R4OOC-CHR3-CH2-Sx-CH2-CHR3-COOR4 (wherein R3 is H or methyl; R4 is H or C1-C18 hydrocarbyl; and x is an integer of 2 to 5) and/or sulfur. According to this process, the unsaturated compound can be reacted with hydrogen sulfide speedily to give the thiol compound at a high selectivity and in a high yield.

Inventors:

HINO YOUICHI (JP)
ISHIKAWA RYUICHI (JP)
WAKAO NORIHIRO (JP)

Application Number:

PCT/JP1997/000635

Publication Date:

September 18, 1997

Filing Date:

February 28, 1997

Export Citation:

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Assignee:

NIPPON CATALYTIC CHEM IND (JP)
HINO YOUICHI (JP)
ISHIKAWA RYUICHI (JP)
WAKAO NORIHIRO (JP)

International Classes:

C07C319/04; C07C323/52; (IPC1-7): C07C323/52; B01J31/02; C07C319/04

Foreign References:

JPS61254555A	1986-11-12
JPS5236623A	1977-03-22
JPS59186955A	1984-10-23

Other References: