Stereochemistry of c-4-Bromo-r-1-cyano-t-3-methoxy-1,2,3,4-tetrahydroisoquinolines from Isoquinoline Reissert Compounds.
作者:Michiharu SUGIURA、Koosuke ASAI、Yoshiki HAMADA、Keiichiro HATANO、Yukihisa KURONO、Hiroko SUEZAWA、Minoru HIROTA
DOI:10.1248/cpb.45.928
日期:——
Treatment of 2-acyl (or sulfonyl)-1-cyano-1, 2-dihydroisoquinolines with bromine and CH3OH gave 2-acyl (or sulfonyl)-4-bromo-1-cyano-3-methoxy-1, 2, 3, 4-tetrahydroisoquinolines in a highly stereoselective manner in high yields. The stereochemistry, with 1, 4-cis and 3, 4-trans configurations, was determined by X-ray crystallography.
用溴和CH3OH处理2-酰基(或磺酰基)-1-氰基-1, 2-二氢异喹啉,得到2-酰基(或磺酰基)-4-溴-1-氰基-3-甲氧基-1, 2, 3,以高度立体选择性的方式高产率生产 4-四氢异喹啉。通过 X 射线晶体学测定立体化学,具有 1, 4-顺式和 3, 4-反式构型。