Synthesis of Thioethers Using Triethylamine-Activated Phosphorus Decasulfide (P4S10)
作者:M. Cinar、Turan Ozturk、Gulsen Turkoglu
DOI:10.1055/s-0035-1561673
日期:——
Abstract The synthesis of thioethers in excellent yields was achieved under mild conditions via the displacement reaction of halogens by sulfur. The cross-reaction of 2-(α-bromoacetyl)thiophene with triethylamine-activated phosphorus decasulfide (Et3N–P2S5) was elaborated by utilizing DFT calculations. The synthesis of thioethers in excellent yields was achieved under mild conditions via the displacement
摘要 在温和的条件下,通过卤素与硫的置换反应,可以实现高收率的硫醚合成。通过利用DFT计算,阐述了2-(α-溴乙酰基)噻吩与三乙胺活化的十硫化二磷(Et 3 N–P 2 S 5)的交叉反应。 在温和的条件下,通过卤素与硫的置换反应,可以实现高收率的硫醚合成。通过利用DFT计算,阐述了2-(α-溴乙酰基)噻吩与三乙胺活化的十硫化二磷(Et 3 N–P 2 S 5)的交叉反应。
One-Pot Oxidation and Bromination of 3,4-Diaryl-2,5-dihydrothiophenes Using Br<sub>2</sub>: Synthesis and Application of 3,4-Diaryl-2,5-dibromothiophenes
作者:Yizhe Dang、Yi Chen
DOI:10.1021/jo071172i
日期:2007.8.31
(1b−5b) was synthesized by a one-pot reaction of 3,4-diaryl-2,5-dihydrothiophenes with Br2 reagent in excellent yield (83−92%). It was found that Br2 performed a double function (oxidation and bromination) during the conversion of 3,4-diaryl-2,5-dihydrothiophenes to 3,4-diaryl-2,5-dibromothiophenes. The application of 3,4-diaryl-2,5-dibromothiophenes used as building blocks was also investigated. Employing
Synthesis of a set of isomeric 2,4,6-triarylmorpholines and 2,6-diaryloxathianes from the corresponding 1,5-diols has been described. The method provides an efficient route to six-membered heterocycles from acyclic diols and is found to be better than Mitsunobu procedure in yield and waste management. In a related study, the ring contraction of pyranone to two isomeric cyclopentenone derivatives through
simple and efficient protocol for the construction of substituted piperazines, piperidines, thiomorpholines, decahydroquinolines, perhydrocyclopenta[b]pyridine, and pyrrolidines bearing N-hydroxy substituents through intramolecularreductivecyclization of diketoximes using sodium cyanoborohydride is described.