A combined experimental and theoretical study of the alkylation of 3,5-dithioxo-[1,2,4]triazepines
作者:M. Esseffar、M. El Messaoudi、R. Jalal、L. R. Domingo、M. J. Aurell
DOI:10.1002/poc.1348
日期:2008.6
5-tetrahydro-6H[1,3]thiazolo[4,5-d][1,2,4]triazepine 4 for n = 2 and 7,9-dimethyl-6-thioxo-2,3,4,5,6,7-hexahydro[1,3]thiazino [4,5-d][1,2,4]triazepine 5 for n = 3. Theoretical calculations have been carried out at the B3LYP/6-31G* and B3LYP(benzene)/6-311+G*//B3LYP/6-31G* levels, in order to rationalize the experimental observations. Both chemo- and regio-selectivities of the alkylation reactions are analyzed.
3,5-二硫代的化疗和区域选择性的烷基化反应[1,2,4]三氮杂 1在与碱性介质α,ω -dibromoalkanes 2A - Ç,溴(CH 2)ñ能Br(Ñ = 1-3) ,是通过实验和理论研究的。这些烷基化,这发生在5位上的硫代硫原子,得到主要是5- bromomethylthio -2,7-二甲基-2,3-二氢- 4H [1,2,4]三氮杂-3-酮3为Ñ = 1 6,8-二甲基-5-硫代-2,3,4,5-四氢-6H- [1,3]噻唑并[4,5-d] [1,2,4]三氮杂 4为ñ = 2和7,9-二甲基-6-thioxo-2,3,4,5,6,7-六氢[1,3]噻嗪[4,5-d] [1,2,4]三氮杂5 5对于n =3。为了使实验结果合理化,已经在B3LYP / 6-31G *和B3LYP(苯)/ 6-311 + G * // B3LYP / 6-31G *的水平上进行了理