Novel tele nucleophilic aromatic substitutions in α-(benzotriazol-1-yl)alkyl aryl ketones
作者:Alan R. Katrizky、Hong Wu、Linghong Xie
DOI:10.1016/s0040-4039(96)02455-0
日期:1997.2
Reactions of α-(benzotriazol-1-yl)alkylaryl ketones 2 with alkyllithiums or Grignard reagents afforded para-alkylated products 5, via novel tele nucleophilic aromatic substitutions.
KATRITZKY, ALAN R.;YANG, ZHIJUN;LAM, JAMSHED N., SYNTHESIS,(1990) N, C. 666-669
作者:KATRITZKY, ALAN R.、YANG, ZHIJUN、LAM, JAMSHED N.
DOI:——
日期:——
Tris(benzotriazol-1-yl)methane: A<sup>-</sup>CO<sub>2</sub>H Synthon for the Preparation of Carboxylic Acids
作者:Alan R. Katritzky、Zhijun Yang、Jamshed N. Lam
DOI:10.1055/s-1990-26975
日期:——
Lithiation of tris(benzotriazol-1-yl)methane 16 gives the tris(benzotriazolyl)methyl carbanion 17 which affords substitution products 18 with many electrophiles. Acidic hydrolysis of 18 affords the corresponding carboxylic acids 19 in good yield. The syntheses of several α-functionalized carboxylic acids are described.