1487 tert-Bu.
Table 11. Relative Rates of Coupling of Grignard Reagents and Alkyl Halides Catalyzed by Copper(1) Halides" Re1 rateh
+
EtMgBr ii-PrMgBr i-PrMgBr tert-BuMgBr
RMgX EtBr EtBr EtBr Et Br EtBr
+
EtMgBr R-X n-PrC1 ii-PrBr 11-PrI
EtMgBr EtMgBr EtMgBr EtRlgBr Et MgBr
i-PrRr tert-BuBr
[CzHs, C2H4, i-CaHlo, i-CtHs]
1 .o 1 3 25 4.0
