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。
Convenient method for the synthesis of C-phosphorylated N-arylformamidines
C-Phosphorylated (PV) arylformamidines have been prepared by the reaction of N-arylamidotrichloromethyl derivatives of phosphorus, thiophosphorus, and selenophosphorus acids with secondary amines. Dependence of the reaction on the nature of chalcogene, electronic and steric factors has been studied. By reduction of N-arylformamidinophosphonoselenides the corresponding C-phosphorylated (PIII) arylformamidines
The previously developed intramolecular cyclocondensation of C-phosphanyl(N-aryl)formamidines into 3-H-1,3-benzazaphospholes has been successfully extended to 1,3-diaminobenzene and 1,3,5-triaminobenzene. Its condensation presents the way to tricyclic and tetracyclic azaphospholes. Their structures were confirmed by spectroscopic methods and key tricyclic and tetracyclic compounds were further characterized
先前开发的 C-膦酰基(N-芳基)甲脒分子内环缩合反应生成 3-H-1,3-苯并氮杂磷已成功扩展到 1,3-二氨基苯和 1,3,5-三氨基苯。它的缩合呈现出三环和四环氮杂磷的方式。它们的结构通过光谱方法得到证实,关键的三环和四环化合物通过单晶 X 射线衍射进一步表征。
Oleinik, V. A.; Marchenko, A. P.; Koidan, G. N., Journal of general chemistry of the USSR, 1988, vol. 58, # 3, p. 624 - 625
作者:Oleinik, V. A.、Marchenko, A. P.、Koidan, G. N.、Pinchuk, A. M.
DOI:——
日期:——
First Annelated Azaphosphole-Ferrocenes: Synthetic Pathways and Structures
作者:Anatolyi Marchenko、Anastasiya Hurieva、Heorgii Koidan、Vincent Rampazzi、Hélène Cattey、Nadine Pirio、Aleksandr N. Kostyuk、Jean-Cyrille Hierso
DOI:10.1021/om300563n
日期:2012.9.10
The first annelated bis- and mono-3H-1,3-azaphosphole ferrocene sandwich compounds have been synthesized from aminoferrocenes, and their X-ray structures are compared to those of their selenide-protected P=Se analogues, showing net discrepancies both in metallocene backbone conformation and in fused-ring planarity.