The reaction of o-amino aryl carboxylic acids with Grignard reagents. The unusual effect of the N-protecting group on aryl ketone formation
作者:Puwen Zhang、Eugene A Terefenko、Joseph Slavin
DOI:10.1016/s0040-4039(01)00160-5
日期:2001.3
The addition of Grignard reagents to the o-amino aryl carboxylic acids without any additive forms the tertiary carbinol as a major product. Unexpectedly, the aryl ketones are formed as the only isolated product if o-amino moiety of anthranilic acids is protected with Boc, trifluoroacetyl, and pivaloyl protecting groups.
在没有任何添加剂的情况下将格氏试剂添加到邻氨基芳基羧酸中形成叔甲醇为主要产物。出乎意料的是,如果邻氨基苯甲酸的o-氨基部分被Boc,三氟乙酰基和新戊酰基保护基保护,则芳基酮将作为唯一的分离产物形成。