Process for preparation 4,5,6,7-tetrahydro-7-oxobenzo-[b]-thioph

Details Process for preparation 4,5,6,7-tetrahydro-7-oxobenzo-[b]-thioph Process for preparation 4,5,6,7-tetrahydro-7-oxobenzo-[b]-thioph

1978-06-22

1981-03-03

Trousof, Natalie

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

260326A, 260326S, 560 28, 564 52, 564166, 564176, 564211, 564222, C07D33354, C07C103127, C07C12719

Patent

active

042542685

ABSTRACT:
There is provided an oxidation process using potassium permanganate as oxidizing agent, for the preparation of certain animal growth promoters, namely, N-(4,5,6,7-tetrahydro-7-oxobenzo[b]thien-4-yl)amides, 4,5,6,7-tetrahydro-7-oxobenzo[b]-thien-4-ylureas, N-(1,2,3,4-tetrahydro-4-oxo-1-naphthyl)amides and 1,2,3,4-tetrahydro-4-oxo-1-naphthylureas, said process affording such compounds in markedly improved yields, and being readily suitable for scale-up.

REFERENCES:
patent: 3994924 (1976-11-01), Asato
patent: 4049717 (1977-09-01), Asato
patent: 4053484 (1977-10-01), Asato
patent: 4134899 (1979-01-01), Asato
Groggins, "Processes in Organic Synthesis",(1952), pp. 417-418.

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