Catalytic investigations of calix[4]arene scaffold based phase transfer catalyst
作者:Pallavi Srivastava、Rajendra Srivastava
DOI:10.1016/j.tetlet.2007.05.001
日期:2007.6
Calix[4]arene scaffold based quaternary ammonium salts as multi-site phase transfer catalysts were prepared and their catalytic activities were investigated for Darzens condensation, O/N-alkylation reactions and ethyl benzene oxidation. These calix[4]arene based multi-site phase transfer catalysts showed significant high catalytic activity as compared to single-site phase transfer catalysts. (c) 2007 Elsevier Ltd. All rights reserved.
SVOBODA, JIRI;KOCFELDOVA, ZUZANA;PALECEK, JAROSLAV, COLLECT. CZECHOSL. CHEM. COMMUN., 53,(1988) N 4, C. 822-832
作者:SVOBODA, JIRI、KOCFELDOVA, ZUZANA、PALECEK, JAROSLAV
DOI:——
日期:——
Svoboda, Jiri; Kocfeldova, Zuzana; Palecek, Jaroslav, Collection of Czechoslovak Chemical Communications, 1988, vol. 53, # 4, p. 822 - 832
作者:Svoboda, Jiri、Kocfeldova, Zuzana、Palecek, Jaroslav
DOI:——
日期:——
Indium(I) bromide-mediated bromocyanomethylation of carbonyl compounds
作者:J.A. Nóbrega、Simone M.C. Gonçalves、C. Peppe
DOI:10.1016/s0040-4039(00)00960-6
日期:2000.7
Bromocyanomethylation of a variety of carbonyl compounds to produce the corresponding 2-bromo-3-hydroxynitriles has been achieved in moderate to good yields by the action of dibromoacetonitrile and indium(I) bromide. Moderate diastereoselectivity was observed. Exclusive mono-coupling at the carbonyl group was found with 1,2-diketones and α-haloketones.