Cyclization of C-phosphorylated (PIII) arylformamidines to 3H-1,3-benzazaphospholes
作者:Anatolyi Marchenko、Heorgii Koidan、Anastasiya Hurieva、Anatolyi Merkulov、Aleksandr Pinchuk、Aleksandr Yurchenko、Alexander B. Rozhenko、Peter G. Jones、Holger Thönnessen、Aleksandr Kostyuk
DOI:10.1016/j.tet.2011.08.007
日期:2011.10
A synthesis of 3H-1,3-benzazaphospholes starting from C-phosphorylated P(III) arylformamidines has been developed. Electron-donating substituents were found to enhance markedly the rate of the cyclization, with substituents at the meta position having the greatest effect. A plausible mechanism of the cyclization was proposed based on DFT calculations.
已经开发了从C-磷酸化的P(III)芳基甲am开始的3 H -1,3-苯并氮杂苯的合成。发现供电子性取代基显着提高环化速率,其中间位取代基具有最大作用。基于DFT计算,提出了可行的环化机理。
Zwitterionic Phosphoranides as Intermediates in the Reaction of Phosphorus Tribromide with<i>N</i>,<i>N</i>-Dimethyl-<i>N</i>′-arylformamidines
作者:Anatoliy P. Marchenko、Georgyi N. Koidan、Anastasia N. Hurieva、Alexander B. Rozhenko、Aleksandr N. Kostyuk
DOI:10.1002/hc.21283
日期:2016.1
zwitterionic phosphoranides 2a,b were found to be intermediate products in the reaction of N,N-dimethyl-N′-(aryl)formamidines with PBr3. The structure of phosphoranide 2a was determined by means of the X-ray and quantum chemistry investigations. Mechanism of its formation was proposed based on Density functional theory (DFT) calculations. Reactions of 2 with amines and selenium yielded either C-phosphorylated