Mechanism and stereochemistry of domino reaction of 2,3-dichloroprop-1-ene with diphenyl dichalcogenides in the system hydrazine hydrate—KOH
作者:E. P. Levanova、V. S. Vakhrina、V. A. Grabel’nykh、I. B. Rozentsveig、N. V. Russavskaya、A. I. Albanov、N. A. Korchevin
DOI:10.1007/s11172-014-0659-7
日期:2014.8
A new scheme of the domino reactions of diphenyl dichalcogenides with 2,3-dichloroprop-1-ene in the system hydrazine hydrate—KOH was suggested, which included nucleophilic substitution of the allylic chlorine atom in dichloropropene, dehydrochlorination of the product obtained with the formation of an allene derivative, addition of a nucleophile to the allene system, allene-acetylene rearrangement
提出了水合肼-KOH体系中二苯基二硫属化物与2,3-二氯丙-1-烯的多米诺反应新方案,包括二氯丙烯中烯丙基氯原子的亲核取代,所得产物脱氯化氢丙二烯衍生物,丙二烯体系中亲核试剂的加成,丙二烯-乙炔重排,亲核试剂加成到三键并形成Z-加合物,2,3-二硫属化物产物异构化为Z-1, 2-二硫属原基丙-1-烯,以及Z-加合物异构化为E-异构体。考虑了单个步骤的最合理机制,包括由 α-硫属元素原子稳定的碳负离子。