Synthesis of 2-Alkynyl-1,4-cyclohexadienes via a Diels–Alder Reaction of Conjugated 2,4-Diynones
作者:Wesley Chalifoux、Khagendra Hamal、Radha Bam
DOI:10.1055/s-0035-1561451
日期:——
reactive dienophiles in the Diels–Alder cyclization reaction is of value in producing diversely functionalized, and therefore useful, cyclic products. We have developed a Diels–Alder reaction of conjugated 2,4-diynones, promoted by Lewis acids, to produce substituted 2-alkynyl-1,4-cyclohexadiene (‘skipped’ cyclohexadiene) products in good to excellent yields. The reaction was successful with a variety
在 Diels-Alder 环化反应中开发和利用高度官能化和反应性的亲双烯体对于生产多种官能化的、因此有用的环状产物具有价值。我们开发了由路易斯酸促进的共轭 2,4-二炔酮的 Diels-Alder 反应,以良好到优异的产率生产取代的 2-炔基-1,4-环己二烯(“跳过的”环己二烯)产品。该反应对多种环状和非环状二烯以及多种 2,4-二炔酮均成功进行。