[4 + 6]-cycloaddition von 1,3-butadien an hexacarbonyl-μ-η6:6-heptafulvalen-dichrom(0)
作者:Cornelius G. Kreiter、Eduard Michels
DOI:10.1016/0022-328x(86)80280-7
日期:1986.9
tricarbonyl-η6-11-(2,4,6-cycloheptatrien-1-ylidene)bicyclo[4.4.1]undeca-2,4,8-trine-chromium(0) (V) and tricarbonyl-η6-bi(bicyclo[4.4.1]undeca-2,4,8-trien-11-ylidene)-chromium(0) (VI). On warming, VI looses the bi(bicyclo[4.4.1]undeca-2,4,8-trien-11-ylidene) hydrocarbon ligand (VII). The reaction of VII with [Mo(CO)3(diglyme)] (VIII) gives the tricarbonyl-η6-bi(bicyclo[4.4.1]undeca-2,4,8-trien-11-ylidene)molybdenum(0)
七氟戊烯(I)与[Cr(CO)3(CH 3 CH)3 ](II)的热反应得到六羰基-η6 :6-七氟戊烯二铬(0)络合物(III)。在THF溶液复合物III的UV照射,与1,3-丁二烯(IV)中连续[4 + 6] -cycloadditions和decomplexations给出了三羰基复合物-η 6 -11-(2,4,6-环庚三烯-1-亚基)双环[4.4.1]十一碳-2,4,8-特林铬(0)(V)和三羰基-η 6 -bi(二环[4.4.1]十一碳-2,4,8-三烯11 -亚苯基)-铬(0)(VI)。升温后,VI失去了双(双环[4.4.1] undeca-2,4,8-三烯-11-亚烷基)烃配体(VII)。VII与反应〔沫(CO)3(二甘醇二甲醚)](VIII),得到三羰基-η 6-双(双环[4.4.1] undeca-2,4,8-三烯-11-亚烷基)钼(0)络合物(IX)。化合物III,V–VII和IX通过IR和NMR光谱(1