4356-79-0Relevant articles and documents
H-bonding activation in highly regioselective acetylation of diols
Zhou, Yixuan,Rahm, Martin,Wu, Bin,Zhang, Xiaoling,Ren, Bo,Dong, Hai
, p. 11618 - 11622 (2013/12/04)
H-bonding activation in the regioselective acetylation of vicinal and 1,3-diols is presented. Herein, the acetylation of the hydroxyl group with acetic anhydride can be activated by the formation of H-bonds between the hydroxyl group and anions. The reaction exhibits high regioselectivity when a catalytic amount of tetrabutylammonium acetate is employed. Mechanistic studies indicated that acetate anion forms dual H-bonding complexes with the diol, which facilitates the subsequent regioselective monoacetylation.
Selective 6-O-Debenzylation of mono- and disaccharide derivatives using ZnCl2-Ac2O-HOAc
Yang, Guangbin,Ding, Xianglan,Kong, Fanzuo
, p. 6725 - 6728 (2007/10/03)
Freshly fused ZnCl2 in Ac2O/HOAc at room temperature has been used for 6-O-debenzylation of mono- and disaccharide derivatives giving yields more than 80%. Notably, allyl, acetyl, benzoyl, tosyl, thiono groups are unaffected under th
The function of the 5-hydroxymethyl group of lactose in enzymatic hydrolysis with beta-galactosidase from E. coli.
Adelhorst,Bock
, p. 1114 - 1121 (2007/10/02)
A series of 6-substituted methyl lactoside derivatives together with methyl allolactoside and (6S)-methyl [6-2H]lactoside have been synthesized and characterized by NMR spectroscopy. All compounds were tested as substrates for the enzyme beta-galactosidas