Insecticidal Evaluation and [4+2] Aza-Diels-Alder Synthesis of 3,7-Diaryl-6,7-dihydro-5<i>H</i>-6-substituted Thiazolo[3,2-a]pyrimidin-5-ones Under Coupled Ultrasonic Irradiation and PTC
作者:Ragini Gupta、Deepti Sharma、P. S. Verma、Anshu Jain
DOI:10.1002/jhet.776
日期:2016.1
A series of 3,7‐diaryl‐6,7‐dihydro‐5H‐6‐substituted‐thiazolo[3,2‐a]pyrimidin‐5‐ones (3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h, 3i, 3j) were synthesized by the [4+2] cycloaddition reaction of 2‐arylideneamino‐4‐arylthiazoles (2a–j) with in situ generated monosubstituted ketenes underPTC conditions coupled with ultrasonication in good to excellent yields. All the synthesized compounds were characterized on the
一系列3,7-二芳基-6,7-二氢-5 H -6-取代的噻唑并[3,2-a]嘧啶-5-酮(3a,3b,3c,3d,3e,3f,3g,3h,3i,3j)是通过2-芳基亚氨基-4-芳基噻唑(2a–j)与原位的[4 + 2]环加成反应合成的在PTC条件下生成的单取代乙烯酮,再加上超声处理,收率良好。所有合成的化合物均根据其光谱(IR,PMR和质量)和分析数据进行表征。还筛选了合成的化合物对棉铃虫的杀虫活性,其中一些化合物显示出有希望的活性。
Synthesis, Characterization, and Biological Activity of Some New Benzoic Acid and Thiazoloacridine Derivatives
作者:Nilav A. Patel、Sandip C. Surti、R. G. Patel、M. P. Patel
DOI:10.1080/10426500701852687
日期:2008.8.4
A series of acridine derivatives 5have been synthesized by cylization of benzoic acid derivatives 4using POCl3. Compounds 4 were synthesized by Ullamnn Condensation of bromo derivatives 2 and substituted anthranilic acid, respectively, which in turn have been prepared from the Schiff bases of 4-aryl-2-amino thiazole 1 and substituted aldehydes. Biological activities of all the compounds have been studied using gram positive and gram negative bacteria and their anti-fungal activity using fungal species Aspergillus Parasiticus and Sclerotium Rolfsii. All structures of the newly synthesized heterocyclic compounds were established based on elemental analyses, IR, H-1 NMR, C-13 NMR, and mass spectra.