Reduction of alkyl and vinyl sulfonates using the CuCl2·2H2O–Li–DTBB(cat.) system
摘要:
The reduction of a series of alkyl mesylates, dimesylates and triflates to the corresponding hydrocarbons was efficiently performed using a reducing system composed of CuCl2 center dot 2H(2)O, an excess of lithium sand and a catalytic amount (5 mol%) of 4,4'-di-tertbutylbiphenyl (DTBB), in tetrahydrofuran at room temperature. The process was also applied to enol and dienol triflates affording alkenes and dienes, respectively. The use of the deuterated copper salt CuCl2 center dot 2D(2)O allowed the simple preparation of the corresponding deuterated products. (c) 2005 Elsevier Ltd. All rights reserved.
Aliphatic C–H activation with aluminium trichloride–acetyl chloride: expanding the scope of the Baddeley reaction for the functionalisation of saturated hydrocarbons
作者:Catherine L. Lyall、Mario Uosis-Martin、John P. Lowe、Mary F. Mahon、G. Dan Pantoş、Simon E. Lewis
DOI:10.1039/c2ob26765a
日期:——
activation and here we demonstrate its applicability to a range of other saturated hydrocarbons. Structural elucidation of the products is described and a mechanistic rationale for their formation is presented. The “aliphatic Friedel–Crafts” procedure allows for production of novel oxygenated building blocks from abundant hydrocarbons and as such can be considered to add significant synthetic value in a single
Copper(II) Triflate, a New Reagent for Mild Dehydration of Alcohols: Synthetic Usefulness and Mechanistic Insight
作者:Khosrow Laali、Robert J. Gerzina、Christine M. Flajnik、Cynthia M. Geric、Ann Marie Dombroski
DOI:10.1002/hlca.19870700314
日期:1987.5.6
The effectiveness of copper(II) triflate (copper(II) trifluoromethanesulfonate) as a new dehydratingreagent for a variety of alcohols has been demonstrated. Based on several control experiments, a possible mechanism is suggested.