作者:Duy-Viet Vo、Siyuan Su、Rajdip Karmakar、Daesung Lee
DOI:10.1021/acs.orglett.3c03696
日期:2024.2.23
Tandem transformations of 1,3-diynyl propiolate derivatives are described. The Alder-ene reaction generates an enyne-allene, which undergoes a formal 1,7-H shift or a Diels–Alder reaction, depending on the substituent on the alkyne. A terminal or aryl-substituted alkyne promotes a 1,7-H shift to generate a new enyne-allene, which undergoes a Myers–Saito cycloaromatization followed by a 1,5-H transfer-mediated
描述了 1,3-二炔基丙炔酸酯衍生物的串联转化。阿尔德烯反应生成烯炔-丙二烯,根据炔烃上的取代基,该烯炔-丙二烯会经历正式的 1,7-H 位移或狄尔斯-阿尔德反应。末端或芳基取代的炔促进 1,7-H 转移,生成新的烯炔-丙二烯,该烯炔-丙二烯经历 Myers-Saito 环芳构化,然后进行 1,5-H 转移介导的环化,形成高度官能化的苯并稠合 6 - 成员循环。预形成的烯炔-丙二烯的反应性显示出相当的反应性曲线。