An expedient synthesis of highly functionalized 1,3-dienes by employing cyclopropenes as <i>C</i><sub>4</sub> units
作者:Chengzhou Jiang、Jiamin Wu、Jiabin Han、Kai Chen、Yang Qian、Zhengyu Zhang、Yaojia Jiang
DOI:10.1039/d1cc01254a
日期:——
chosen as standard C4 units of 1,3-diene precursors. The reactions are believed to undergo a unique cutting and insertion process, involving a CC bond cleavage of the enaminone and insertion of a new C(sp2) source with the formation of two C–C single bonds. A broad range of substrates can be used to synthesize the corresponding 1,3-dienes under very mild reaction conditions, including low catalyst-loading
已经描述了通过在铑催化剂的存在下用环丙烯裂解烯胺酮的C C键来合成二羰基官能化的1,3-二烯的有效方法。明智地选择乙酸酯取代的环丙烯作为1,3-二烯前体的标准C 4单元。据信,这些反应经历了独特的切割和插入过程,包括烯胺酮的C C键裂解和插入新的C(sp 2)源并形成两个C C单键。在非常温和的反应条件下,包括低催化剂负载,环境温度和中性反应溶剂,可以使用各种各样的底物来合成相应的1,3-二烯。