Process for preparing thiophene derivatives and thiophene deriva

Details Process for preparing thiophene derivatives and thiophene deriva Process for preparing thiophene derivatives and thiophene deriva

1978-03-10

1980-09-09

Siegel, A.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549 79, C07D33316, C07D33324

Patent

active

042219159

ABSTRACT:
Process for the preparation of a series of thiophene derivatives, from which 2-thiopheneacetic acid derivatives can easily be prepared, in high yields and selectivity by using substituted or unsubstituted thiophenes as the starting materials by easy operations. 2-Thiopheneacetic acid derivatives are very useful compounds as the chemical modifier of penicillin and cephalosporin. Novel compounds, i.e. .alpha.-arylthio-2-thiopheneacetic acids are also disclosed. These compounds are useful as the intermediates of the synthesis of 2-thiopheneacetic acids.

REFERENCES:
patent: 3560525 (1971-02-01), Kaltenbronn
Hartough, "Chem of Hetero Comp.", Thiophene and Der. (1952), p. 189.
Reeve, J. Amer. Chem. Soc., 83, 2755 (1961).
Wagner, "Synth Org. Chem.", (1965), p. 8.

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