.alpha.-Alkylacroleins are prepared by reacting an alkanal with formaldehyde and a secondary amine in the presence of a carboxylic, dicarboxylic or polycarboxylic acid in certain molar ratios within a pH range of from 2.5 to 7 and at from 0.degree. to 150.degree. C. The .alpha.-alkylacroleins which can be prepared by the process described are valuable starting materials for dyes, drugs and pest control agents.
Intermediates in the reaction of Grignard reagents with nitromethane
作者:Stanley Wawzonek、James Vern Kempf
DOI:10.1021/jo00956a005
日期:1973.8
Construction of N-CQDs/InNbO4 composites for the removal of ipronidazole: Performance and degradation mechanism
作者:Jie Zhao、Xiao Guo、Qiang He、Fei Wu、Binghua Yao
DOI:10.1016/j.jssc.2021.122567
日期:2021.12
O<sub>2</sub>-Mediated Oxidation of Aminoboranes through 1,2-N Migration
作者:Marian Rauser、Daniel P. Warzecha、Meike Niggemann
DOI:10.1002/anie.201803168
日期:2018.5.14
In analogy to the classical reaction of C−B bonds with peroxides, the first oxidative functionalization of aminoboranes through a 1,2‐N migration was realized. Readily available aliphaticnitrocompounds are thereby transformed into N‐ and O‐functionalized hydroxylamines in a single synthetic operation. Addition of hazardous peroxides is avoided. Instead, the insertion of O2, as the terminal oxidant