Kinetics and Mechanism of the Anilinolysis of Diisopropyl Chlorophosphate in Acetonitrile
作者:Md. Ehtesham Ul Hoque、Hai-Whang Lee
DOI:10.5012/bkcs.2011.32.9.3245
日期:2011.9.20
anilines () and deuterated anilines () are investigated kinetically in acetonitrile at . The anilinolysis rate of 3 is rather slow to be rationalized by the conventional stereoelectronic effects. The obtained deuterium kinetic isotope effects (DKIEs; ) are secondary inverse ( = 0.71-0.95) with maximum magnitude at X = H.A concerted mechanism involving predominant backside nucleophilic attack is proposed on
氯磷酸二异丙酯 (3) 与取代苯胺 () 和氘代苯胺 () 的亲核取代反应在乙腈中进行了动力学研究。3 的苯胺分解速率相当慢,无法通过传统的立体电子效应合理化。所获得的氘动力学同位素效应 (DKIEs;) 是二次反演 (= 0.71-0.95),在 X = HA 处具有最大值,在二次反演 DKIE 的基础上提出了涉及主要背面亲核攻击的协同机制。
Trichloroisocyanuric Acid as an Efficient Reagent for the Synthesis of Phosphoroamidates via Atherton–Todd Reaction under Base-Free Conditions
作者:Babak Kaboudin、Atousa Donyavi、Foad Kazemi
DOI:10.1055/s-0036-1589111
日期:2018.1
rapid, and good-yielding for the synthesis of phosphoroamidates. A simple, efficient, and novel method is developed for the synthesis of phosphoroamidates via an Atherton–Todd coupling reaction of amines with dialkyl H-phosphite usingtrichloroisocyanuricacid as an efficient and safe reagent. Treatment of amines with dialkyl H-phosphite and trichloroisocyanuricacid under base-free conditions gives
An efficient method to generate N-P bonds directly from N-H and P-H bonds is described. Various arylamines and dialkylphosphites were directly oxidized to the corresponding N-arylphosphoramidates at room temperature in moderate to good yields by using an inexpensive catalyst-oxidant (CuBr/air) system. (C) 2013 Elsevier Ltd. All rights reserved.
Fe3O4@MgO nanoparticles as an efficient recyclable catalyst for the synthesis of phosphoroamidates via the Atherton–Todd reaction
作者:Babak Kaboudin、Foad Kazemi、Fereshteh Habibi
DOI:10.1016/j.tetlet.2015.09.129
日期:2015.11
A simple and efficient method is presented for the synthesis of phosphoroamidates in moderate to good yield via the Atherton-Todd coupling of primary amines with H-dialkyl phosphites using Fe3O4@MgO nanoparticles as a recyclable catalyst. (C) 2015 Elsevier Ltd. All rights reserved.