Organic syntheses based on 2-oxoglutaric acid.<b>V</b>. Syntheses of novel 2<i>H</i>-1,4-benzothiazines and a 2,5-dihydro-1,5-benzothiazepine
作者:Torsten Blitzke、Dieter Sicker、Horst Wilde
DOI:10.1002/jhet.5570340215
日期:1997.3
Syntheses aimed on the incorporation in heterocycles of segments originating in the precursor 2-oxoglutaric acid are described. Cylocondensation of dimethyl 2-oxoglutarate 1, dimethyl 3-bromo-2-oxoglutarate 2, and dimethyl (E)-2-oxoglutaconate 3 with 2-aminobenzenethiol gave rise to the novel 2H-1,4-benzothiazines 4 and 5, and the 2,5-dihydro-1,5-benzothiazepine 6, respectively, by incorporation of
描述了旨在将源自前体2-氧代戊二酸的链段掺入杂环的合成。二甲基-2-酮戊二酸的Cylocondensation 1,二甲基3-溴-2-氧代戊二酸2,和二甲基(Ë)-2- oxoglutaconate 3与2-氨基苯硫醇引起了新的2- ħ -1,4-苯并噻嗪4和5,和通过并入C-1 / C-2或C-2 / C-3或C-3 / C-4 / C-5链段分别形成2,5-二氢-1,5-苯并硫氮杂6 6前体。