Stereoselective synthesis of α,β-unsaturated carboxylic acids from alkynes using the Fe(CO)5/t-BuOK/AcOH/CH2Cl2 reagent system
作者:Mallesh Beesu、Mariappan Periasamy
DOI:10.1016/j.jorganchem.2012.01.005
日期:2012.5
Reactive iron carbonyl species generated in situ using the Fe(CO)5/t-BuOK/CH3COOH/CH2Cl2 reagent system reacts with alkynes to give the corresponding α,β-unsaturated carboxylic acids after CuCl2·2H2O oxidation with some regio and stereoselectivity.
Cp<sub>2</sub>TiCl<sub>2</sub>-catalyzed hydrocarboxylation of alkynes with CO<sub>2</sub>: formation of α,β-unsaturated carboxylic acids
作者:Peng Shao、Sheng Wang、Gaixia Du、Chanjuan Xi
DOI:10.1039/c6ra25003c
日期:——
Cp2TiCl2-catalyzed hydrocarboxylation of alkynes with CO2 (atmospheric pressure) has been reported. A range of alkynes were transformed to the corresponding α,β-unsaturatedcarboxylicacids in high yields with high regioselectivity. The reaction proceeded with hydrotitanation, transmetalation, and subsequently carboxylation with CO2.