Reactions of thallium(I) carboxylates and iodine with alkenes
作者:Richard C. Cambie、Rodney C. Hayward、John L. Roberts、Peter S. Rutledge
DOI:10.1039/p19740001858
日期:——
Treatment of an alkene with a thallium(I) carboxylate and iodine gives the corresponding vic-iodocarboxylate in high yield. The reactions are regiospecific and in conjunction with solvolysis of the products, offer an alternative to the Prévost reaction. Differences in the behaviour of thallium(I) carboxylates and silver carboxylates towards alkenes in the presence of iodine are discussed.
‘Green’ methodology for efficient and selective benzoylation of nucleosides using benzoyl cyanide in an ionic liquid
作者:Ashok K. Prasad、Vineet Kumar、Shashwat Malhotra、Vasulinga T. Ravikumar、Yogesh S. Sanghvi、Virinder S. Parmar
DOI:10.1016/j.bmc.2005.04.038
日期:2005.7
Benzoyl cyanide in the ionic liquid 1-methoxyethyl-3-methylimidazolium methanesulfonate has been employed as a 'green' alternative and mild reaction condition protocol to conventional pyridine-benzoyl chloride system for efficient and selective benzoylation of nucleosides (of both the ribo- and deoxyribo-series) at ambient temperatures. The use of benzoyl cyanide-ionic liquid combination has been successfully
Benzoyl Shift: A New Approach to Reverse Regioselectivity in the Monoprotection of vic-Diols
作者:Camille Oger、Jean-Marie Galano、Aurélien de la Torre、Valérie Bultel-Poncé、Thierry Durand
DOI:10.1055/s-0035-1561496
日期:——
monoprotected vic-diols is described. Triggered under mild conditions, this transformation allows regioselective protection of the least acidic hydroxyl function of an activated vic-diol. The benzoyl shift in monoprotected vic-diols is described. Triggered under mild conditions, this transformation allows regioselective protection of the least acidic hydroxyl function of an activated vic-diol.