Ruthenium(<scp>ii</scp>) complexes containing a phosphine-functionalized thiosemicarbazone ligand: synthesis, structures and catalytic C–N bond formation reactions via N-alkylation
作者:Rangasamy Ramachandran、Govindan Prakash、Sellappan Selvamurugan、Periasamy Viswanathamurthi、Jan Grzegorz Malecki、Wolfgang Linert、Alexey Gusev
DOI:10.1039/c4ra14797a
日期:——
We report the coordination flexibility of phosphino-thiosemicarbazone in ruthenium(ii) complexes, together with their catalytic properties with regards to N-alkylation.
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。
Solvent-free one-pot reactions for annulating a pyrimidine ring on thiazoles under microwave irradiation
作者:Lal Dhar S Yadav、Suman Dubey、Beerendra S Yadav
DOI:10.1016/s0040-4020(03)00854-8
日期:2003.7
One-pot reactions of glycine, acetic anhydride and thiazole Schiff bases (2a–f) diastereoselectively and expeditiously annulate a pyrimidine ring on the thiazole nucleus to yield 6,7-dihydro-5H-thiazolo[3,2-a]pyrimidin-5-ones (4a–f) undermicrowaveirradiation and solvent-free conditions.
甘氨酸,乙酸酐和噻唑席夫碱(2a – f)的一锅反应非对映选择性,迅速使噻唑核上的嘧啶环脱环,得到6,7-dihydro-5 H -thiazolo [3,2- a ]嘧啶-在微波辐射和无溶剂条件下为5-1(4a – f)。
[4+2] Diels–Alder Cycloaddition Reaction of 2-benylidineamino-4-phenyl-1,3-thiazoles with Sulfene and their Antifungal Activities
作者:Susanta Kr. Borthakur、Paran Boruah、Birendra N. Goswami
DOI:10.3184/030823407x191877
日期:2007.2
2-Benzylidineamino-4-phenyl-1,3-thiazole undergoes [4+2] Diels–Aldercycloadditionreaction with sulfene resulting in good yield of a mixture of isomeric 2,6-diphenyl-2H,4H-[1,3]thiazolo[3,2-c][1,3,5]thiadiazine 3,3-dioxides and 3, 7-diphenyl[1,3]thiazolo[3,2-b] [1,2,4]thiadiazine 5,5-dioxides derivatives are reported.
Formation of Azomethines from 2-Aminothiazoles and (Heterocyclic) Aromatic Aldehydes
作者:Christopher Hopkinson、George Denis Meakins、Roberts James Purcell
DOI:10.1055/s-1991-26528
日期:——
Reexamination of previous work and new studies show that the reactions of 2-aminothiazoles with (heterocyclic) aromatic aldehydes are not straightforward; there are wide divergencies in behaviour between the various amine-aldehyde pairs. Simple efficient procedures for preparing 2-(alkylideneamino)thiazole derivatives and [bis(thiazol-2-ylamino)methyl]arenes have been developed.