88837-78-9Relevant articles and documents
Synthetic and mechanistic aspects of acid-catalyzed disproportionation of dialkyl diarylmethyl ethers: A combined experimental and theoretical study
Barbero, Margherita,Bazzi, Stefano,Cadamuro, Silvano,Dughera, Stefano,Ghigo, Giovanni
, p. 4346 - 4351 (2009)
The disproportionation reactions of various dialkyl diarylmethyl ethers have been carried out in the presence of a catalytic amount (10 mol-%) of o-benzenedisulfonimide as a Bronsted acid catalyst; the reaction conditions were mild, and the yields of the diarylmethane target products were good. The catalyst was easily recovered and purified, ready to be used in further reactions. The theoretical study confirmed that the reaction proceeds in two steps: The formation of a carbocation from the protonated ether followed by hydride transfer. Although the hydride transfer is the rate-determining step, it is the stability of the carbocation that determines the reaction rate and therefore the yields.
Copper(II) bromide as an efficient catalyst for the selective protection and deprotection of alcohols as bis(4-methoxyphenyl)methyl ethers
Mezaache, Rofia,Dembelé, Yénimégué Albert,Bikard, Yann,Weibel, Jean-Marc,Blanc, Aurélien,Pale, Patrick
experimental part, p. 7322 - 7326 (2010/02/28)
In a cheap and eco-friendly process, primary and secondary alcohols were easily protected as bis(methoxyphenyl)methyl (BMPM) ethers in good yields using CuBr2 as a catalyst in acetonitrile at room temperature. Deprotection could easily be achie
