Cycloaddition reactions between tetrafluorodisilicyclobutene and cyclic dienes mediated by transition metal carbonyls
作者:C.H. Lin、C.Y. Lee、T.T. Jzang、C.C. Lin、C.S. Liu
DOI:10.1016/0022-328x(88)83150-4
日期:1988.12
Under the mediation of transition metal carbonyls, cycloaddition of 3-t-butyl-1,1,2,2-tetrafluoro,2-disilacyclobutane (1) to various cyclic dienes have been studied under photochemical conditions. For conjugates dienes, Ni and Co mediated reactions give 1,4-addition products, whereas Fe, Mo and W mediated reactions result in 1,2-addition products. The hard metal Cr mediates the reactions to give products
在过渡金属羰基的介导下,已经在光化学条件下研究了3-叔丁基-1,1,2,2-四氟,2-二硅环丁烷(1)与各种环二烯的环加成反应。对于共轭二烯,Ni和Co介导的反应产生1,4-加成产物,而Fe,Mo和W介导的反应产生1,2-加成产物。由于F迁移,硬质金属Cr介导了反应以生成产物。非共轭降冰片二烯与1的反应在Cr介导下生成1,2-和1,4-加成产物,但在Mo介导下仅生成1,2-加成产物。讨论了中间体结构与反应途径之间的相关性。