Syntheses of 1,2-di- and 1,2,3-trialkyldiaziridines
摘要:
The reactions of 1,3,5-trialkylhexahydro-1,3,5-triazines with N-chloroalkylamines resulted in 1,2-dialkyldiaziridines, whereas the reactions of N-chloroalkylamines or N,N-dichloroalkylamines with an excess of primary aliphatic amines gave 1,2,3-trialkyldiaziridines.
Reaction of 1,2-Dialkyldiaziridines and 1,2,3-Trialkyldiaziridines with Methyl Propiolate in Ionic Liquids and in Organic Solvents
作者:Vera Yu. Petukhova、Leonid L. Fershtat、Vadim V. Kachala、Vladimir V. Kuznetsov、Dmitriy V. Khakimov、Tatyana S. Pivina、Nina N. Makhova
DOI:10.1002/jhet.1079
日期:2013.3
An interaction of 1,2‐dialkyldiaziridine and 1,2,3‐trialkyldiaziridine with methylpropiolate was studied both in organic solvent (MeCN, CH2Cl2, C6H6) and in ionic liquids. Earlier unknown linear structures, in which three molecules of methylpropiolate were suited to one diaziridine molecule (adducts 1 : 3), were obtained in MeCN. The diaziridine ring expansion products 1,2,3,4‐tetrahydropyrimidine
都在有机溶剂(MeCN,CH 2 Cl 2,C 6 H 6)和离子液体中。在MeCN中获得了较早的未知线性结构,其中三个丙酸甲酯分子适合一个二氮丙啶分子(加合物1:3)。二氮丙啶扩环产物1,2,3,4-四氢嘧啶衍生物(加合物1:2),在某些情况下与它们一起在离子液体中获得相同的线性结构。提供了发现的反应机制。反应的区域选择性被认为是由初始二氮丙啶中取代基的结构决定的。这一结论得到了量子化学计算的支持。
High pressure‐assisted synthesis of 1,2,3‐trialkyldiaziridines from N‐chloroalkylamines
作者:Vladimir V. Kuznetsov、Julia S. Syroeshkina、Dmitrii I. Moskvin、Marina I. Struchkova、Nina N. Makhova、Alexey A. Zharov
DOI:10.1002/jhet.5570450230
日期:2008.3
Abstractmagnified imageNew method for the preparation of 1,2,3‐trialkyldiaziridines 1 in high yields, based on the transformation of N‐chloroalkylamines 3 without using carbonyl compounds in the presence of primary aliphatic amines with the same alkyl fragment, potassium carbonate and a small amount of water in CHCl3 under high pressure (500 MPa), was developed. Diaziridines 1 can be synthesized in the same conditions using a larger amount of potassium carbonate instead of primary aliphatic amines however in lower yields. The kinetic investigations on the synthesis of 1,2‐diethyl‐3‐methyldiaziridine 1a from N‐chloroethylamine 3a have shown that the reaction leading to diaziridine 1a proceeds according to the law of the second order.