作者:Matthias Tamm、Thomas Bannenberg、Bernd Dressel、Roland Fröhlich、Doris Kunz
DOI:10.1021/om000830l
日期:2001.3.1
Sterically demanding tropylium salts of the type (1,3,5-C7H4R3)BF4 (3a, R = tert-butyl; 3b, R = isopropyl) and (C7H6R)BF4 (3c, R = tert-butyl; 3d, R = SiMe3) react with [(η6-p-xylene)Mo(CO)3] by arene exchange and Mo(CO)3 group transfer leading to cationic η7-cycloheptatrienyl complexes 4a−4d in excellent yields. 4a further reacts with alkali halides to give [(η7-1,3,5-C7H4R3)Mo(CO)2X] (5a, R = tert-butyl
(1,3,5-C 7 H 4 R 3)BF 4(3a,R =叔丁基; 3b,R =异丙基)和(C 7 H 6 R)BF 4(3c,R =叔丁基; 3D,R =森达3)与[(η 6 - p二甲苯)的Mo(CO)3 ]由芳烃交换和Mo(CO)3基团转移导致阳离子η 7 -cycloheptatrienyl络合物4a - 4d高产。图4a与碱金属卤化物进一步反应,得到[(η 7 -1,3,5--C 7 H ^ 4 - [R 3)的Mo(CO)2 X](5A,R =叔丁基,X =氯;图6a,R =叔丁基,X = 1)。的1,3,5-三所述的X射线晶体结构叔-butyltropylium四氟硼酸盐(3A)和[(η的7 -1,3,5--C 7 H ^ 4 - [R 3)的Mo(CO)3 ] BF 4报告了(4a,R =叔丁基)。