Synthesis of dithienoquinazolines from pyrimidines via intramolecular nucleophilic aromatic substitution of hydrogen
作者:Egor V. Verbitskiy、Ekaterina M. Dinastiya、Anna A. Baranova、Oleg S. Eltsov、Gennady L. Rusinov、Oleg N. Chupakhin、Valery N. Charushin
DOI:10.1007/s10593-017-2188-4
日期:2017.10
The possibility of intramolecular nucleophilic aromatic substitution of hydrogen in the series of 5-[2-(het)aryl-1-benzothiophen-3-yl]-pyrimidines was explored. A convenient method for the synthesis of [1]benzothieno-[3,2-f]thieno[2,3-h]quinazoline and [1]benzothieno-[3,2-f]thieno[3,2-h]quinazoline based on the developed SN H protocol was proposed. The energy parameters (width of the band gap, the
探索了5- [2-(杂)芳基-1-苯并噻吩-3-基]-嘧啶系列中氢的分子内亲核芳族取代的可能性。合成[1]苯并噻吩并- [3,2- f ]噻吩并[2,3- h ]喹唑啉和[1]苯并噻吩并-[3,2- f ]噻吩并[3,2- h ]喹唑啉的简便方法提出了基于已开发的S N H协议的协议。苯并噻吩并[ 3,2- f ]-噻吩并[2,3- h ]的能量参数(带隙宽度,最高占据分子轨道(HOMO)和最低未占据分子轨道(LUMO)的能量)基于吸收光谱和循环伏安法的数据,确定了首次合成的对喹唑啉。