Process for preparing pentaerythritol-tetrakis(3-alkylthio-propi

Details Process for preparing pentaerythritol-tetrakis(3-alkylthio-propi Process for preparing pentaerythritol-tetrakis(3-alkylthio-propi

1986-10-24

1988-09-27

Shippen, Michael L.

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

Organic compounds

Carboxylic acid esters

C07C14920

Patent

active

047743557

ABSTRACT:
A process for preparing a pentaerythritol-tetrakis(3-alkylthio-propionate) represented by the general formula: ##STR1## wherein R represents an alkyl group having from 8 to 30 carbon atoms, is disclosed, comprising reacting an alkylmercaptan having from 8 to 30 carbon atoms with an acrylic ester or an acrylic amide to form a 3-alkylthio-propionic acid ester or a 3-alkylthio-propionic acid amide, hydrolyzing the ester or amide to form a 3-alkylthio-propionic acid, and then reacting this product with pentaerythritol. The desired product can easily be obtained at high purity and high yield by this process.

REFERENCES:
patent: 2828321 (1958-03-01), Bullock
patent: 3758549 (1973-09-01), Dexter et al.
patent: 4125515 (1978-11-01), Kuczkowski

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