Steric bulk controls CO2 absorption: N‐substituted amino acidsalts in poly(ethylene glycol) reversibly absorb CO2 in nearly 1:1 stoichiometry. Carbamic acid is thought to be the absorbed form of CO2; this was supported by NMR and in situ IR spectroscopy, and DFT calculations. The captured CO2 could be converted directly into oxazolidinones and thus CO2 desorption could be sidestepped.
General Synthesis of Amino Acid Salts from Amino Alcohols and Basic Water Liberating H<sub>2</sub>
作者:Peng Hu、Yehoshoa Ben-David、David Milstein
DOI:10.1021/jacs.6b03488
日期:2016.5.18
An atom-economical and environmentally friendly method to transform amino alcohols to amino acid salts using just basic water, without the need of pre-protection or added oxidant, catalyzed by a ruthenium pincer complex, is developed. Water is the solvent, the source of the oxygen atom of the carboxylic acid group, and the actual oxidant, with liberation of dihydrogen. Many important and useful natural