However, when the aqueous solution contained NaOH, two α-mono-halide ketone molecules had a special dimer condensation. The reaction mechanisms were explored by conducting GC-MS, EPR, and CV with DFT calculations. These revealed that in situ generation of a halogen radical initiated electrocatalytic halogenation, while the dimer condensation involved a hydroxyl radical-mediated C1 fragment elimination.
Hach,V. et al., Collection of Czechoslovak Chemical Communications, 1963, vol. 28, p. 266 - 271
作者:Hach,V. et al.
DOI:——
日期:——
Facile Approach to Geminal Heterodihalogenation. One-Pot Synthesis of α-Bromo-α-Chloro Ketones
作者:Ming Bian、Jin-feng Zhou、Dong-min Tang
DOI:10.1055/s-0040-1707169
日期:2020.9
An efficient and practical protocol for the geminal heterodihalogenation of methyl ketones by using readily available dimethyl sulfoxide and a combination of HCl and HBr is reported. Control experiments suggested that the acidity of the solution, as well as the oxidizing ability and nucleophilicity of the dimethyl sulfoxide might work cooperatively in ensuring the success of the tandem substitution