A series of new quinazoline derivatives bearing a vinylic chloride group on the 2-position was prepared by using a consecutive SRN1 / ERC1 radical strategy.
一系列在2-位带有乙烯基氯的新型喹唑啉衍生物,是通过连续的SRN1/ERC1自由基策略制备的。
Radical–nucleophilic substitution (S<sub>RN</sub>1) reactions: preparation and reactions of α-nitrosuiphides
作者:W. Russell Bowman、Geoffrey D. Richardson
DOI:10.1039/p19800001407
日期:——
α-Nitrosulphides were prepared by SRN1 reaction of 2-bromo-2-nitropropane with thiolate anions, and by SN2 attack of sodium 2-nitropropan-2-ide on symmetrical disulphides. The α-nitrosulphides undergo radicalnucleophilic substitution (SRN1) by nitronate, sulphinate, and malonate anions, but not by thiolate anions.
α-亚硝基硫化物是通过2-溴-2-硝基丙烷与硫醇根阴离子的S RN 1反应,以及2-硝基丙烷-2-化钠对对称二硫化物的S N 2攻击而制备的。α-亚硝基硫化物通过亚硝酸根,亚磺酸根和丙二酸根阴离子进行自由基亲核取代(S RN 1),但不被硫醇根阴离子取代。
Construction of 3-Oxazolin-5-one via Visible Light-Induced Nondecarboxylative Coupling and Sequential Reactions
imines or pyrrole compounds. Harnessing the power of photocatalysis, we accomplished a straightforward synthesis of 3-oxazolin-5-ones from redox-active esters and secondary nitrocompounds. Visible light-induced nondecarboxylative coupling of a redox-active ester, nitro aldol condensation, and subsequent visible light-induced N-oxide deoxygenation were accomplished within 2 h. The reaction mechanism was