Preparation of 2,3-dihydrothiazolo[2,3-a]isoquinolinium salts and their reactions with complex metal hydrides
作者:Harjit Singh、Kulbhushan Lal
DOI:10.1039/p19720001799
日期:——
3-dihydrothioazolo[2,3-a]isoquinolinium perchlorate (3; R = Me) and 3-methylthiazolo[2,3-a]isoquinolinium perchlorate (10; R = Me) with LAH or NaBH4 gave 3-methyl-2,3-dihydro-10bH-thiazolo[2,3-a]isoquinoline (7), 3-methyl-2,3,5,6-tetrahydro-10bH-thiazolo[2,3-a]isoquinoline (8) and a minor component of undetermined structure. 3-Bromomethyl-2,3-dihydrothiazolo[2,3-a]isoquinolinium perchiorate (12) obtained
通过1-烯丙基硫代异喹啉(1)和β-羟丙基硫代异喹啉(4; X = H,OH)的环化反应合成了3-甲基-2,3-二氢噻唑并[2,3- a ]异喹啉高氯酸盐(3; R = Me) ; R = Me)。从β-羟乙基硫代异喹啉(4; X = H,OH; R = H)以及1-巯基异喹啉和乙烯获得2,3-二氢噻唑[2,3- a ]异喹啉高氯酸盐(3; R = H)二溴化物。用LAH还原3-甲基-2,3-二氢噻唑[2,3- a ]高氯酸异喹啉鎓(3; R = Me)和3-甲基噻唑并[2,3- a ]高氯酸异喹啉鎓(10; R = Me)或用LAH还原NaBH 4得到3-甲基-2,3-二氢-10b H-噻唑并[2,3- a]异喹啉(7),3-甲基-2,3,5,6-四氢-10b H-噻唑并[2,3- a ]异喹啉(8)和未确定结构的次要成分。将由(1)得到的3-溴甲基-2,3-二氢噻唑并[2,3- a ]