Title : ( Synthesis, X-ray and Fluorescence Characteristics of Pyrimido[5,4-e]thiazolo[3,2-a]pyrimidine as a Novel Heterocyclic System )
Authors: , Mehdi Bakavoli , Ali Shiri , Seyed Mohammad Seyedi , tayebe asghari shirghan , Joel T. Mague ,
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Abstract
Derivatives of a new heterocyclic system, pyrimido[5,4-e]thiazolo[3,2-a]pyrimidine 3, were prepared by sequential treatment of ethyl 4 - chloro - 2-(methylthio)pyrimidine-5-carboxylate 1 with 4,5- dihydrothiazol-2-amine 2 and various secondary amines. Single crystal X-ray analysis confirmed the structure of the regioisomer 3. The photophysical characterization of these new compounds was performed by UV/VIS absorption and fluorescence emission spectroscopy. Out of six derivatives studied, only four products 4a–d showed relatively strong fluorescence intensity. The relevant photophysical parameters for all derivatives in this series, including quantum yields and Stokes shifts for the best fluorophores are given.
Keywords
, Pyrimidothiazolopyrimidine, X-ray, Heterocyclization, Fluorescence spectroscopy
@article{paperid:1062015,
author = {, and Bakavoli, Mehdi and Shiri, Ali and Seyedi, Seyed Mohammad and Asghari Shirghan, Tayebe and Joel T. Mague},
title = {Synthesis, X-ray and Fluorescence Characteristics of Pyrimido[5,4-e]thiazolo[3,2-a]pyrimidine as a Novel Heterocyclic System},
journal = {Journal of Fluorescence},
year = {2017},
volume = {27},
number = {3},
month = {April},
issn = {1053-0509},
pages = {1183--1190},
numpages = {7},
keywords = {Pyrimidothiazolopyrimidine; X-ray; Heterocyclization; Fluorescence spectroscopy},
}
%0 Journal Article
%T Synthesis, X-ray and Fluorescence Characteristics of Pyrimido[5,4-e]thiazolo[3,2-a]pyrimidine as a Novel Heterocyclic System
%A ,
%A Bakavoli, Mehdi
%A Shiri, Ali
%A Seyedi, Seyed Mohammad
%A Asghari Shirghan, Tayebe
%A Joel T. Mague
%J Journal of Fluorescence
%@ 1053-0509
%D 2017
