A Simple, Versatile Synthetic Route toN-1-Aryl-, -Heteroaryl-, - Acylmethyl-, -Carboxymethyl-and -Alkyl-benzotriazoles via Regiospecific or Highly Regioselective Substitutions of Benzotriazole
Domino Knoevenagel/Michael addition/C-acylation reaction. Synthesis of 1,3-cyclohexane-1,3-diones
作者:Tadeusz Stefan Jagodziński、Slawomir Westerlich
DOI:10.3998/ark.5550190.0011.b26
日期:——
The three component reactions of Meldrum’s acid, 1,3-bis-(benzotriazol-1-yl)propan-2-one or 1-benzotriazol-1-ylpropan-2-one and an aldehyde, carried out in DMF at 60 oC gave rise to 2,4-bis-(benzotriazol-1-yl)cyclohexane-1,3-diones or 4-benzotriazol-1-ylcyclohexane-1,3-diones, respectively, in fairly high yields. Unlike similar reactions reported earlier with acetone, the reactions with 1,3-bis-(ben