Improved yne–ene-cross metathesis utilizing a dihydroimidazole carbene ruthenium complex
作者:Roland Stragies、Ulrike Voigtmann、Siegfried Blechert
DOI:10.1016/s0040-4039(00)00858-3
日期:2000.7
Improved yne–ene cross metathesis with a 4,5-dihydroimidazolin-2-ylidene ruthenium benzylidene complex is described. The N-heterocyclic carbene ligands complex 2 shows significantly increased activity in the case of sterically hindered olefins when compared to 1. Even disubstituted triple bonds are transformed into 1,2,3-trisubstituted-1,3-dienes.
描述了改进的4,5-二氢咪唑啉-2-亚烷基钌亚苄基配合物的炔-烯交叉复分解。的Ñ -杂环碳烯配体配合物2相比,当在空间位阻的烯烃的情况下示出了显著增加的活性1。甚至二取代的三键也被转化为1,2,3-三取代的1,3-二烯。