Reaction of O,O-dialkyldithiophosphoric acids with N-alkyl-2-chloro-2-methylpropanimines
作者:M. B. Gazizov、R. A. Khairullin、N. G. Aksenov
DOI:10.1007/s11172-014-0803-4
日期:2014.12
A reaction between O,O-dialkyldithiophosphoric acids and N-alkyl-2-chloro-2-methyl-propanimines proceeds in two steps: a protonation of the imine group and a substitution of the chlorine atom, that leads to (dialkoxythiophosphoryl)sulfanyl-containing iminium salts.
Reduction of 4-(Haloalkyl)azetidin-2-ones with LiAlH<sub>4</sub> as a Powerful Method for the Synthesis of Stereodefined Aziridines and Azetidines
作者:Willem Van Brabandt、Yves Dejaegher、Robin Van Landeghem、Norbert De Kimpe
DOI:10.1021/ol053015g
日期:2006.3.1
[reaction: see text] A new synthesis of stereodefined aziridines and azetidines, starting from 4-(1- or 2-haloalkyl)azetidin-2-ones, is described. Treatment of the latter compounds with LiAlH(4) gave 1,2-fission of the beta-lactam, followed by an intramolecular nucleophilic substitution of the halogen, giving rise to the formation of 2-(1-alkoxy-2-hydroxyethyl)aziridines in the case of 4-(1-haloalkyl)azetidin-2-ones
Ring Transformation of 2-(Haloalkyl)azetidines into 3,4-Disubstituted Pyrrolidines and Piperidines
作者:Willem Van Brabandt、Robin Van Landeghem、Norbert De Kimpe
DOI:10.1021/ol0530676
日期:2006.3.1
starting materials for rearrangements toward stereospecifically defined five- and six-membered azaheterocycles, such as 3,4-cis-disubstituted pyrrolidines and piperidines. During these reactions, bicyclic azetidinium intermediates were formed which were ring opened by a variety of nucleophiles. Hereby, reactions proceeding via 1-azoniabicyclo[2.2.0]hexanes are reported for the first time.
Reaction of dialkyl phosphites with N-2-methyl-2-chloropropylidenealkylamines
作者:M. B. Gaziziov、R. A. Khairullin、A. A. Minnikhanova、A. I. Alekhina、A. A. Bashkirtsev、O. G. Sinyashin
DOI:10.1134/s0012500810070025
日期:2010.7
that the structure of final products is dependent on the halogennature. To reveal the effect of the nature of substituents at P(IV) and N(III) on the structure of resulting products and the synthesis of polyfunctional OPCs of new types, we have studied the reactions of dimethyl, diethyl, diisopropyl, dinbutyl�, and di�2�chloroet� hyl phosphites (I) with (2�chloropropylidene)alkyl� amines ( II) containing
含有氨基烷基磷酰基片段的有机磷化合物 (OPC) 具有重要的实践和理论意义。这些化合物显示出广泛的有用特性。将亚磷酸二烷基酯加入亚胺是制备氨基烷基膦酸酯的主要方法之一。我们最近表明 (1) 2-卤代烷基亚丙基胺与亚磷酸二烷基酯反应形成新型 OPC 以及加成产物。发现最终产品的结构取决于卤素的性质。为了揭示 P(IV) 和 N(III) 上取代基的性质对所得产物结构和新型多功能 OPCs 合成的影响,我们研究了二甲基、二乙基、二异丙基、二丁基的反应,和二 2 氯乙基亚磷酸酯 (I) 与 (2 氯亚丙基) 烷基胺 (II) 在氮原子上含有叔丁基、苄基和异丙基取代基。亚磷酸二烷基酯 I 与化合物 II 的反应导致最初形成加成产物,在 26-29 ppm 处显示磷共振信号。R 2 = tB u 和R 1 = Me 的加成产物III 是结晶固体,可以以纯态长期储存而不会发生变化。当反应混合物储存 15-20
Phosphorus-containing N-alkylaldimmonium salts
作者:R. A. Khairullin、M. B. Gazizov、N. G. Aksenov、O. I. Gnezdilov、A. V. Il’yasov