(34%), respectively. The mixed ferrocene 16 (63%) was prepared from 13a/b and pentamethylcyclopentadiene. Treatment of 6/7 with PhLi at −78° gave a 5:3 mixture of the 1-C-phenylated alcohols 17a/b and 18a/b (71%) which were silylated to 19a/b and 20a/b, respectively. Lithiation of 19/20 and reaction with FeCl2 afforded the symmetric ferrocenes 21 and 22 and the mixed ferrocene 23 (54:15:31, 79%) which were
已经制备了
环戊二烯基C-糖苷(=糖基-
环戊二烯)作为潜在的富烯。它们与亲核试剂的反应导致被(保护的)糖醇部分取代的
环戊二烯,并因此产生对映体纯的
金属茂。的治疗1与
环戊二烯基阴离子,得到差向异构糖基-
环戊二烯6 / 7(方案1)。每个差向异构体由一个ca组成。1,
环戊二烯a和b和1,4-
环戊二烯a和b的1:1混合物,通过制备进行分离。HPLC。在室温下发生缓慢的区域异构化。Diels - Alder加法N-苯基马来
酰亚胺至约6a / b 。3:7在室温下,得到3 '内切' -adducts,即,二取代的烯烃(8或9,25%)和三取代的烯烃10(45%)和11(13%)。通过X射线分析确定10的结构。的还原6 / 7(分离后或原位)上LiAlH 4得到cyclopentadienylmannitols 12A / b,其被转化成甲
硅烷基醚(80%)13A / b(方案2)。13a / b的
锂化以及与FeCl