Synthesis of <i>cis</i>-3-Acyl-4-alkenylpyrrolidines via Gold(I)-Catalyzed Cycloisomerization Reaction of (<i>Z</i>)-8-Aryl-5-tosyl-5-azaoct-2-en-7-yn-1-ols
作者:Ming-Chang P. Yeh、Ming-Nan Lin、Wei-Jong Chang、Jia-Lun Liou、Ya-Fon Shih
DOI:10.1021/jo101148e
日期:2010.9.3
-ols were cycloisomerized to the corresponding cis-3-acyl-4-alkenylpyrrolidines when treated with a catalytic amount of Ph3PAuCl/AgOTf in CH2Cl2. The reaction proceeded via attack of the hydroxyl group onto the gold-activated alkynes followed by [3,3]-sigmatropic rearrangement to generate cis-3-acyl-4-alkenylpyrrolidines in good yields. This transformation can be applied to the synthesis of cis- and
(Z)-8-芳基-5-甲苯磺酰基5-氮杂辛-2-en-7-yn-1-醇经催化量的Ph 3处理后被环化为相应的顺式-3-酰基-4-烯基吡咯烷CH 2 Cl 2中的PAuCl / AgOTf 。该反应通过将羟基攻击到金活化的炔上,然后进行[3,3]-σ重排而进行,以高收率产生顺式-3-酰基-4-烯基吡咯烷。该转化可分别用于由(Z)-和(E)-8-芳基辛基-2-en-7-yn-1-ols合成顺式和反式-3-酰基-4-烯基环戊烷。