An Efficient Method for the Chemoselective Preparation of Benzoylated 1,2-Diols from Epoxides
作者:A. Khalafi-Nezhad、M. N. Soltani Rad、A. Khoshnood
DOI:10.1055/s-2003-42416
日期:——
A very efficient and highly regioselective ring-opening reaction of epoxides with benzoic acid and its derivatives in the presence of cat. amount of tetrabutylammonium bromide (TBAB) in anhydrous acetonitrile has been developed. This effective method is useful for the preparation of selectively protected diols as precursor for many organic syntheses such as those of acyclic nucleosides and other synthetic
Chitosan-Silica Sulfate Nano Hybrid as a Novel and Highly Proficient Heterogeneous Nano Catalyst for Regioselective Ring Opening of Epoxides <i>via</i>
Carboxylic Acids
nano hybrid (CSSNH) as a novel and efficientheterogeneous nano catalyst involving acid‐base bifunctional activity is described. The catalytic potency and activity of this eco‐friendly catalyst was investigated in regioselectiveringopening of epoxides with carboxylic acids to access structurally diverse 1,2‐diol mono‐esters in good to excellent yields. CSSNH catalyst was characterized using different