Novel bis[(E)-1-(halomethyl)-2-chlorovinyl] chalcogenides as starting materials for the efficient synthesis of bis(chloromethylidene)-1,4-dichalcogenanes
作者:Alexander V. Martynov、Lyudmila I. Larina、Svetlana V. Amosova
DOI:10.1016/j.tetlet.2011.12.083
日期:2012.3
An efficientsynthesis of novel bis[(E)-1-(halomethyl)-2-chlorovinyl] sulfides and selenides via regio- and stereoselective electrophilic addition of SCl2 and SeCl2 to propargyl halides has been developed. The bis(2-chlorovinyl) chalcogenides prepared represent reagents for the synthesis of chalcogen-containing heterocycles and have been used for the synthesis of novel bis(E-chloromethylidene) derivatives
Synthesis of<i>E,E</i>-bis(chloromethylidene) derivatives of<i>N</i>-organylthiomorpholines and -selenomorpholines and their quaternary salts
作者:Alexander V. Martynov、Nataliya A. Makhaeva、Svetlana V. Amosova
DOI:10.1080/17415993.2014.928296
日期:2014.9.3
An efficient method for preparation of hitherto unknown E, E-bis(chloromethylidene) derivatives of N-organylthiomorpholines and -selenomorpholines by the reaction of E, E-bis(3-bromo-1-chloro-1-propen-2-yl) sulfide and selenide with primary amines in benzene or THF as well as with ethylammonium bromide in ethanol in the presence of Na2CO3 has been described. Heterocylization of the above sulfide and selenide by reaction with diethylamine in THF affords the unknown E, E-bis(chloromethylidene) derivatives of heterocyclic quaternary salts-4,4-diethyl-1,4-thiazinan-4-onium and -1,4-selenazinan-4-onium bromides.[GRAPHICS].
BIS-E-Chloromethylidene Derivatives of 4-Thio- and 4-Selenomorpholinamines
作者:A. V. Martynov、N. A. Makhaeva、L. I. Larina、S. V. Amosova