Simple, Efficient and One-Pot Method for Synthesis of Aminomethylene<i>gem</i>-Diphosphonic Acid Derivatives from Ketones via Beckmann Rearrangement
作者:Ruyu Chen、You Huang、Mingshu Wu
DOI:10.1055/s-2004-831233
日期:——
A simple, expeditious and convenient synthesis of aminomethylene gem-diphosphonic acid derivatives in one-pot reaction using ketones, hydroxylamine hydrochloride, phosphorus trichloride and water as starting materials in the presence of pyridine via Beckmann rearrangement is described in the modest yields.
Synthese und eigenschaften von o-(dimethylarsino)-oximen
作者:J. Kaufmann、F. Kober
DOI:10.1016/s0022-328x(00)93139-5
日期:1974.5
The reaction of dimethylaminodimethylarsine (CH3)2NAs(CH3)2 with oximes results in the formation of O-(dimethylarsino)-oximes RR′CNOAs(CH3)2. 14 new compounds of this type are described. The reaction mechanism and the IR and 1 H-NMR-spectral data are discussed.