Process for preparing 2-acyl-5-substituted thiatetrahydrofuran-4

Details Process for preparing 2-acyl-5-substituted thiatetrahydrofuran-4 Process for preparing 2-acyl-5-substituted thiatetrahydrofuran-4

1978-03-17

1979-02-06

Raymond, Richard

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D30732

Patent

active

041384130

ABSTRACT:
Described are 2-acyl-5-substituted thiatetrahydrofuran-4-ones having the generic structure: ##STR1## wherein R.sub.1, R.sub.2, R.sub.1 ' and R.sub.2 ' are the same or different and each represents hydrogen or methyl and wherein R.sub.3 represents one of C.sub.1 -C.sub.9 alkyl, benzyl, phenyl, substituted or unsubstituted allyl having the structure: ##STR2## substituted or unsubstituted 3-furyl having the structure: ##STR3## (wherein R.sub.4 and R.sub.8 are the same or different and each represents hydrogen or methyl) hydroxy alkyl, oxoalkyl, hydroxycycloalkyl or oxocycloalkyl having the structure: ##STR4## (wherein R.sub.5 and R.sub.6, taken separately, represent hydrogen or C.sub.1 -C.sub.3 alkyl or R.sub.5 and R.sub.6, taken together, complete a cycloalkyl group and wherein Q is one of the moieties: ##STR5## prepared according to the process of dimerizing one or more alpha, beta-alkane dione(s) to form one or more alpha, beta-alkane dione dimer(s) having the structure: ##STR6## and reacting the said alkane dione dimer(s) in acidic medium and in the presence of a solvent with a mercaptan, having the structure:

REFERENCES:
patent: 3985907 (1976-10-01), Evers et al.

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