Deboronation and cage rearrangement of the closo-1,12-carborane salt [1,12-(PPh2Me)2-1,12-C2B10H10]I2 occurs in refluxing methanol to give the zwitterionic nido-7,9-carborane 7,9-(PPh2Me)2-7,9-C2B9H9. Notably, deboronation and cage substitution of the isomeric closo-1,7-carborane salt [1,7-(PPh2Me)2-1,7-C2B10H10]I2 takes place in methanol to afford the salt [10-OMe-7,9-(PPh2Me)2-7,9-C2B9H9]I.
closo-1,12-碳
硼烷盐 [1,12-(PPh2Me)2-1,12-C2B10H10]I2 在回流
甲醇中发生脱
硼和笼重排,得到两性离子 nido-7,9-碳
硼烷 7,9- (PPh2Me)2-7,9-C2
B9H9。值得注意的是,异构体 closo-1,7-carborane 盐 [1,7-(PPh2Me)2-1,7-C2B10H10]I2 在
甲醇中发生脱
硼和笼取代,得到盐 [10-OMe-7,9 -(PPh2Me)2-7,9-C2
B9H9]I。