Synthesis of bridged azabicycles from isoquinolines via a tandem of allylboration and intramolecular metathesis
作者:N. Yu. Kuznetsov、K. A. Lyssenko、A. S. Peregudov、Yu. N. Bubnov
DOI:10.1007/s11172-007-0245-3
日期:2007.8
analysis. In a similar way, trans-3-allyl-1-vinyl-1,2,3,4-tetrahydroisoquinoline synthesized by sequential vinylation (with vinyllithium) and allylboration of isoquinoline, yielded a mixture of cis-and trans-isomers in the ratio 1.6: 1. Intramolecular metathesis reactions of N-Boc derivatives of cis-isomers in the presence of the Grubbs catalyst (2.0–2.5 mol.%) afforded 7,8-benzo-10-azabicyclo[4.3.1]dec-2-enes
开发了一种从异喹啉合成桥连氮杂双环化合物的方法。该方法基于烯丙基硼化和钌催化的分子内复分解的组合。溴异喹啉与三烯丙基硼烷的还原性 1,3-二烯丙基化反应得到反式-1,3-二烯丙基-1,2,3,4-四氢异喹啉。当与三烯丙基硼烷一起加热时,这些化合物产生了比例约为 1:1 的顺式和反式异构体混合物。 确认了顺式-1,3-二烯丙基-5-溴-1,2,3,4-四氢异喹啉的结构通过 X 射线衍射分析。以类似的方式,通过异喹啉的顺序乙烯基化(与乙烯基锂)和烯丙基硼化合成的反式-3-烯丙基-1-乙烯基-1,2,3,4-四氢异喹啉,产生比例为顺式和反式异构体的混合物1.6:1。