RU94039934A - Process for preparing 2,6-di-tert-butyl-4-mercaptophenol
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Process for preparing 2,6-di-tert-butyl-4-mercaptophenol
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RU94039934A
RU94039934ARU94039934/04ARU94039934ARU94039934ARU 94039934 ARU94039934 ARU 94039934ARU 94039934/04 ARU94039934/04 ARU 94039934/04ARU 94039934 ARU94039934 ARU 94039934ARU 94039934 ARU94039934 ARU 94039934A
Волгоградское акционерное общество открытого типа "Химпром"
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Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
FIELD: aromatic mercaptanes, more specifically process for preparing 2,6-di-tert-butyl-4-mercaptophenol which is used in the synthesis of antioxidants for polymers and drugs including 2,2-bis(3,5-di-tert-butyl-4- hydroxyphenylthio)propane. SUBSTANCE: claimed process comprises reducing polythiobis (2,6-di-tert-butylphenol with zinc chips and hydrochloric acid in acetic acid at 40-70 C. EFFECT: more efficient preparation process.
Claims (1)
Изобретение относится к области ароматических меркаптанов, конкретно, к способу получения 2,6-дитретбутил-4-меркаптофенола, который применяется в синтезе антиоксидантов для полимеров и лекарственных препаратов, в том числе 2-2-бис(3,5-дитретбутил-4-гидроксифенилтио)пропана. Целью изобретения являются повышение выхода целевого продукта и упрощение процесса. Сущность изобретения заключается в восстановлении политиобис (2,6-дитретбутилфенола) действием цинковой стружки и соляной кислоты в уксусной кислоте при 40 - 70oС.The invention relates to the field of aromatic mercaptans, and in particular, to a method for producing 2,6-ditretbutyl-4-mercapthenol, which is used in the synthesis of antioxidants for polymers and drugs, including 2-2-bis (3,5-ditretbutyl-4- hydroxyphenylthio) propane. The aim of the invention is to increase the yield of the target product and simplify the process. The invention consists in the restoration of polythiobis (2,6-ditretbutylphenol) by the action of zinc chips and hydrochloric acid in acetic acid at 40 - 70 o C.
RU94039934A1994-10-251994-10-25Process for preparing 2,6-ditertbutyl-4-mercaptophenol
RU2075471C1
(en)