Four acid-catalysed dehydration reactions proceed without interference
作者:Rio Carlo Lirag、Ognjen Š. Miljanić
DOI:10.1039/c4cc02990a
日期:——
Four acid-catalysed dehydration reactions can proceed in one pot, simultaneously and without interference, to yield one imine, one acetal (or boronic ester), one ester and one alkene, even though many other cross-products could be conceived. This advanced self-sorting behaviour is attributed to different dehydration rates, brought about by dissimilar electronic properties of starting materials.
acyclic acetals to the corresponding hydroxyalkyl carboxylic esters and simple esters, respectively. 2-Iodoxybenzoic acid (IBX) in the presence of tetraethylammonium bromide was employed for the reaction in aqueous media. The salient features of the protocol include short reaction time, environmentally benign reagents and solvent, and moderate to high yields. o-iodoxybenzoic acid - acetals - oxidations
Ketene Acetals. XIX. 2-Methylene-1,3-dioxolanes and 1,3-Dioxanes
作者:S. M. McElvain、Michael J. Curry
DOI:10.1021/ja01191a071
日期:1948.11
NOVEL SULFAMATE COMPOUND CONTAINING N-SUBSTITUTED CARBAMOYL GROUP AND METHOD FOR PREPARING THE SAME
申请人:YUKONG LIMITED
公开号:EP0801642B1
公开(公告)日:2000-12-20
Facile oxidative hydrolysis of acetals to esters using hypervalent iodine(III)/LiBr combination in water
作者:Waraporn Panchan、Supanimit Chiampanichayakul、Deanna L. Snyder、Siriporn Yodbuntung、Manat Pohmakotr、Vichai Reutrakul、Thaworn Jaipetch、Chutima Kuhakarn
DOI:10.1016/j.tet.2010.01.098
日期:2010.4
The combination of (diacetoxy)iodobenzene (Phl(OAc)(2), DIB) and lithium bromide (LiBr) efficiently oxidized cyclic and acyclic acetals to the corresponding hydroxyalkyl carboxylic esters and simple esters in good to excellent yields The merits of this reaction are that it employs commercially available and non-explosive hypervalent iodine(III) reagent, water as the solvent, a short reaction tune, and mild reaction conditions (C) 2010 Elsevier Ltd All rights reserved