50 % yields. The synthesis of 6a–c is the result of two distinct modes of reactivity exhibited by the alkyne reactant in one pot, i.e. 1,3‐dipolar cycloaddition to C and Se atoms and insertion into Fe‐µ‐alkylidene. All the products were characterized by means of elemental analysis, IR and multinuclear NMR spectroscopy, and the molecular structure of 6a was elucidated by a single‐crystal X‐ray diffraction
该二
铁μ-vinyliminium化合物的[Fe 2的CP 2(CO)(μ-CO)μ-η 1:η 3 -C 3 HC 2 HC 1 NME(R)}] CF 3 SO 3(R = Me中,图2a ; R =的Xyl = 2,6-C 6 H ^ 3我2,2B ; CP =η 5 -C 5 H ^ 5)用灰色
硒反应,在
甲醇钠的存在下,得到相应的
硒官能衍
生物的[Fe 2的CP 2(CO)(μ-CO)μ-η 1:η 3 -C 3HC 2(Se)C 1 NMe(R)}],3a – b,约ca。50%的产率。获得了单
铁两性离子络合物[FeCP(CO)SeC 1(NMe 2)C 2 HC 3 H}] 4,作为反应的副产物(31%),导致3a。用S 8 / NaOMe处理3b,得到49产率的5价的2-ferra-
噻吩[FeCP(CO)SC 3 HC 2 HC 1 NMe(Xyl)}] 。3a的直接反