Highly Efficient C-C Bond-Forming Reactions of an α-Cyanoketene Dithioacetal with Aldehydes and Ketones
作者:Qian Zhang、Qun Liu、Yu Liu、Mang Wang、Jianglei Hu、Yanbing Yin
DOI:10.1055/s-2006-942530
日期:——
In the presence of titanium(IV) chloride, the C-C bond-forming reaction of the α-cyanoketene cyclic dithioacetal 1,3-dithiolan-2-ylideneacetonitrile with various aldehydes and ketones afforded multifunctional pentanedinitriles, 3-substituted- or 3,3-disubstituted 2,4-di-1,3-dithiolan-2-ylidenepentanedinitriles, respectively, in good to excellent yields under very mild conditions. A possible mechanism involving consecutive C-C bond formation was proposed.
在氯化钛(IV)存在下,δ-氰基酮环二硫缩醛 1,3-二硫环戊-2-亚基乙腈与各种醛和酮发生了 C-C 键形成反应,在非常温和的条件下分别得到了多功能戊二腈、3-取代-或 3,3- 二取代 2,4-二-1,3-二硫环戊-2-亚基戊二腈,收率从良好到极佳。研究人员提出了一种涉及 C-C 键连续形成的可能机理。