|
|
|
| Selective Synthesis of β-Benzildioxime |
| SHI Zhao-rui, LI Guo-hua, ZHANG Wen-bo |
| School of Chemical Engineering, Hebei University of Technology, Tianjin 300130, China |
|
|
|
|
Abstract α-Benzildioxime（α-1） and β-benzildioxime（β-1） were prepared by nucleophilic addition reaction of benzil（2） and hydroxylamine hydrochloride（3）. The structures were confirmed by 1H NMR and IR. Under optimum conditions［2 10 mmol， n(2) : n(3)=1:5， methylbenzene as solvent, triethylamine as acid binding agent, dropping time of 3 was 4 h and pH=8, at 55 ℃ for 5.5 h］, the yield of β-1 was 90.4%.
|
|
Received: 30 December 2014
|
|
|
|
|
|
|
2015, Vol. 23 
