Thiophene compounds and the production thereof

Details Thiophene compounds and the production thereof Thiophene compounds and the production thereof

1976-03-01

1978-08-22

Siegel, A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

424275, C07D33300, A01N 900

Patent

active

041088654

ABSTRACT:
Thiophene compounds of formula: ##STR1## wherein R.sub.1 represents an alkyl radical containing 1 to 4 carbon atoms, a cycloalkyl, cycloalkenyl or aralkyl radical, R.sub.2 represents an atom of hydrogen or a methyl radical with the proviso that when R.sub.2 represents methyl R.sub.1 represents alkyl, or R.sub.1 and R.sub.2, when they are taken together, represent, with the carbon atom to which they are attached, a cyclopolymethylene radical having from 3 to 6 carbon atoms, whereby a reaction medium comprising a solvent and a compound of the general formula: ##STR2## wherein R.sub.3 represents an atom of alkali metal, and R.sub.4 represents an atom of hydrogen or of alkali metal is treated at a temperature between -20.degree. and +80.degree. C with the appropriate quantity of a halide of the general formula:

REFERENCES:
patent: 3755412 (1973-08-01), Taranko et al.

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