Formation of DPM ethers using O-diphenylmethyl trichloroacetimidate under thermal conditions
作者:Kyle T. Howard、Brian C. Duffy、Matthew R. Linaburg、John D. Chisholm
DOI:10.1039/c5ob02455b
日期:——
diphenylmethyl (DPM) ethers by reaction with O-diphenylmethyl trichloroacetimidate in refluxing toluene without the requirement of a catalyst or other additives. A number of acid and base sensitive substrates were protected in excellent yield using this new method without disturbing the pre-existing functionality present in these molecules. This reaction is the first example of the formation of an ether from stoichiometric
Organohalide-catalyzed dehydrative O-alkylation between alcohols: a facile etherification method for aliphatic ether synthesis
作者:Qing Xu、Huamei Xie、Pingliang Chen、Lei Yu、Jianhui Chen、Xingen Hu
DOI:10.1039/c5gc00284b
日期:——
Organohalides effectively catalyzed dehydrative O-alkylation reactions between alcohols, providing selective, practical, green, and easily scalable homo- and cross-etherification methods for the preparation of useful symmetrical and unsymmetrical aliphatic ethers.
Pd(OAc)2/dppf as an efficient and highly active catalyst for the allylation of amines, alcohols and carboxylic acids with 1-phenyl-1-propyne
作者:Yogesh S. Wagh、Dinesh N. Sawant、Pawan J. Tambade、Kishor P. Dhake、Bhalchandra M. Bhanage
DOI:10.1016/j.tet.2011.02.008
日期:2011.4
Pd(OAc)(2)/1,1'-bis(diphenylphosphino)ferrocene as an efficient, highly active catalyst for the allylation of amines, alcohols and carboxylic acids with 1-phenyl-1-propyne has been developed. The effect of various reaction parameters, such as ligand, time, solvent, temperature, metal: ligand ratio and catalyst concentration on yields of the product were investigated. The optimized procedure works well under mild operating conditions and permits rapid generation of a library for various allylated products. (C) 2011 Elsevier Ltd. All rights reserved.