Substituted 2-ethylbenzo [b] thiophene, process for preparation

Details Substituted 2-ethylbenzo [b] thiophene, process for preparation Substituted 2-ethylbenzo [b] thiophene, process for preparation

1993-09-17

1995-05-30

Raymond, Richard L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549 58, C07D33352, C07D33354

Patent

active

054203007

ABSTRACT:
The subject of the invention is 2-(1-bromoethyl)benzo[b]thiophene of formula: ##STR1## as well as a process for the preparation thereof, characterised in that 2-ethylbenzo[b]thiophene is reacted, in a solvent, with a brominating agent in the presence of a free radical initiator, which provides the desired compound, and the use thereof in the preparation of 2-(1-(benzyloxyamino)ethyl)benzo[b]thiophene and of N-hydroxy-N-{1-(benzo[b]thien-2-yl)ethyl}urea.
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REFERENCES:
patent: 3629267 (1971-12-01), Kaiser et al.
patent: 4737516 (1988-04-01), Stutz
Donald S. Noyce et al., "Reactivity of Benzo[b]thiophene in electrophilic Reactions as Determined from Solvolysis Rates", Journal of Organic Chemistry, vol. 39, No. 19, 1974, pp. 2828-2831.
Chem. Abs, CA95(9): 80622d, Chatterjee et al., 1981.

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