Amberlyst-15® in ionic liquid: an efficient and recyclable reagent for the benzylation and hydroalkylation of β-dicarbonyl compounds
作者:Ziyauddin S. Qureshi、Krishna M. Deshmukh、Pawan J. Tambade、Bhalchandra M. Bhanage
DOI:10.1016/j.tetlet.2009.11.122
日期:2010.1
Benzylation and hydroalkylation of 1,3-dicarbonylcompounds using Amberlyst-15 immobilized in ionic liquid [Bmim][PF6] as an efficient reusable reagent was studied. The reagent was compared with other solid acid reagents along with role of the ionic liquid. The effect of various reaction parameters like type of reagent, solvent, substrate molar ratio, reaction time, and temperature were studied. Present
The vinyl arenes undergo smooth hydroalkylation with 1,3-diketones in the presence of 10 mol% of iodine to afford phenethyl diketones and ketoesters in good yields in short reaction times. The use of inexpensive and readily available molecular iodine makes this method quite simple, more convenient and practical. (C) 2010 Elsevier Ltd. All rights reserved.
Magnesium bistrifluoromethanesulfonimide as an efficient catalyst for the hydroalkylation of aromatic olefins with 1,3-diketones under solvent-free conditions
作者:Hong She Wang、Wei Xing Zhao
DOI:10.1016/j.cclet.2011.01.036
日期:2011.8
An efficient magnesium bistrifluoromethanesulfonimide [Mg(NTf(2))(2)] catalyzed hydroalkylation of aromatic olefins with 1,3-diketones under solvent-free conditions has been developed. The reactions proceed smoothly to give the desired products in good yields in short reaction times. (C) 2011 Hong She Wang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
HY and Hβ Zeolites Mediated C–C Bond Formation via Addition/Substitution Reaction of 1,3-Dicarbonyl Compounds to Alcohols and Alkenes
作者:Murali Boosa、Divya Rohini Yennamaneni、Durgaiah Chevella、Vasu Amrutham、Krishna Sai Gajula、Ramulamma Madasu、Venugopal Akula、Narender Nama
DOI:10.1007/s10562-022-04062-8
日期:——
We investigated direct additionreaction of β-diketone with several alcohols and alkenes employing solid acid zeolites (HY & Hβ). The presence of acidic sites and the porous structures exhibits and influences the catalytic activity. These heterogeneous catalysts were used directly for the nucleophilic addition/substitution reactions. HY zeolite was utilized for the reaction of various aromatic alcohols