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
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
Direct Conversion of Aromatic 1,3-Dioxanes to Hydroxypropyl Esters with Pyridinium Hydrobromide Perbromide and Sodium Acetate in Water
作者:Shinsei Sayama
DOI:10.3987/com-17-13682
日期:——
Various aromatic 1,3-dioxanes were directly converted to respective hydorxypropyl esters with pyridinum hydrobromide perbromide and sodium acetate in water at room temperature.
SUGAI, SABURO;KODAMA, TAKASHI;AKABOSHI, SANYA;IKEGAMI, SHIRO, CHEM. AND PHARM. BULL., 1984, 32, N 1, 99-105