Steric and electronic effects on the reduction of O-silylated aromatic ketoximes with borane
作者:Margarita Ortiz-Marciales、Dyliana Figueroa、José A López、Melvin De Jesús、Rafael Vega
DOI:10.1016/s0040-4039(00)01109-6
日期:2000.8
aniline as the principal product, up to a 95% yield in the case of the more hindered TIPS group. The 2-methoxy- and 2,4-methoxyacetophenone O-TBS oximes produced only the rearranged secondary aniline. Reduction of 1-indanone O-TBS oximes afforded only the tetrahydroquinoline, whereas the 2-indanone analog provided only 2-aminoindan.
用硼烷-THF还原在TMS,TBS,TIPS和MDPS基团上被TMS,TBS,TIPS和MDPS基团取代的4-甲氧基苯乙酮肟,获得了4-甲氧基-N-乙基苯胺作为主要产物,在这种情况下产率高达95%更阻碍了TIPS集团的发展。2-甲氧基-和2,4-甲氧基苯乙酮O -TBS肟仅产生重排的仲苯胺。还原1-茚满酮O - TBS肟仅提供四氢喹啉,而2-茚满酮类似物仅提供2-氨基茚满。