Heterocyclic nitrogen compounds. Part VI. Preparation of 2,3-dihydro-3-oxospiro{isoindole-1-3′-benzo[b]thiophen}-2′-carboxylic acid SS-dioxide by the Schmidt reaction on benzo[b]naphtho[1,2-d]thiophen-5,6-quinone SS-dioxide
作者:Helen J. Sare、Emily F. M. Stephenson
DOI:10.1039/j39690001149
日期:——
The Schmidt reaction on benzo[b]naphtho[1,2-d] thiophen-5,6-quinoneSS-dioxide (I) yields as a main product 2,3-dihydro-3-oxospiroisoindole-1,3′-benzo[b]thiophen}-2′-carboxylic acid SS-dioxide (II). The product (IVa) of decarboxylatin of (II), has been converted by Raney nickel desulphurisation into 2,3-dihydro-3-methyl-3-phenylisoindol-1-one (Va). The N-methyl derivative of (IVa) has similarly been
苯并[ b ]萘并[1,2 - d ]噻吩-5,6-醌SS-二氧化物的施密特反应以主要产物2,3-二氢-3-氧代螺异吲哚-1,3' -苯并[ b ]噻吩} -2′-羧酸SS-二氧化物(II)。(II)的脱羧拉丁的产物(IVa)已经通过阮内镍脱硫法转化为2,3-二氢-3-甲基-3-苯基异吲哚-1-酮(Va)。类似地,将(IVa)的N-甲基衍生物脱硫,得到2,3-二氢-2,3-二甲基-3-苯基异吲哚-1-酮(Vc)。