Metal-Free Visible-Light-Mediated Desulfurization and Aromatization of Dihydropyrimidine-2-thiones for Synthesis of 2-Unsubstituted Pyrimidines
作者:Xi-Cun Wang、Zheng-Jun Quan、Tian-Yao Yang
DOI:10.1055/s-0036-1588401
日期:——
The visible-light-mediated aerobic desulfurization and aromatization of Biginelli 3,4-dihydropyrimidine-2(1H)-thiones for a one-step synthesis of 2-unsubstituted pyrimidines was established. The protocol uses molecular oxygen as an inexpensive oxidant, with visible-light irradiation, and eosin B as an organophotoredox catalyst.
建立了 Biginelli 3,4-二氢嘧啶-2(1H)-硫酮的可见光介导的有氧脱硫和芳构化,用于一步合成 2-未取代嘧啶。该协议使用分子氧作为廉价氧化剂,采用可见光照射,曙红 B 作为有机光氧化还原催化剂。
Design, synthesis and anticancer activity of new monastrol analogues bearing 1,3,4-oxadiazole moiety
作者:Fatma A.F. Ragab、Sahar M. Abou-Seri、Salah A. Abdel-Aziz、Abdallah M. Alfayomy、Mohamed Aboelmagd
DOI:10.1016/j.ejmech.2017.06.026
日期:2017.9
A series of dihydropyrimidine (DHPM) derivatives bearing 1,3,4-oxadiazole moiety was designed and synthesized as monastrol analogues. The new compounds were screened for their cytotoxic activity toward 60 cancer cell lines according to NCI (USA) protocol. Seven compounds were further examined against the most sensitive cell lines, leukemia HL-60(TB) and MOLT-4. The most active compounds were 9m against
A Simple and Efficient One-Pot Synthesis of Multifunctional 5-Aryl-<i>5H</i>-thiazolo[3,2-a]pyrimidines
作者:Seerat Fatima、Anindra Sharma、Rahul Sharma、Rama P. Tripathi
DOI:10.1002/jhet.831
日期:2012.5
One‐pot economical and efficientsynthesis of multifunctional 5H‐thiazolo[3,2‐a]pyrimidines by the reaction of 4‐aryl dihydrothiopyrimidines with propargyl bromide in the presence of inorganic base has been reported in very short time.
An Efficient Synthesis of Some Novel Bicyclic Thiazolopyrimidine Derivatives
作者:Akbar Mobinikhaledi、Mojgan Zendehdel、Mahdia Hamidi Nasab、Mohammad Ali Bodaghi Fard
DOI:10.1515/hc.2009.15.6.451
日期:2009.1
An efficient and rapid synthesis of some thiazolopyrimidine derivatives from pyrimidinthiones and chloroacetyl chloride in refluxing tetrahydrofurane (THF) is described. The method is simple and practical, and generating thiazole derivatives in good isolated yields.
A domino desulfitative coupling and decarboxylative coupling of 3,4-dihydropyrimidine-2-thiones with copper(I) carboxylates
作者:Zhang Zhang、Shi-Hong Lu、Bin Xu、Xi-Cun Wang
DOI:10.1016/j.cclet.2016.12.034
日期:2017.5
general carbon-nitrogen and carbon-carbon cross-couplingreaction between 3,4-dihydropyrimidine-2-thiones and copper(I) carboxylates were performed in the presence of palladium acetate. The copper(I) carboxylates act not only as desulfurative reagents but also as sources of carbon nucleophiles. A wide array of highly substituted and functionalized pyrimidines scaffolds were synthesized in good yields