Abstract
AbstractMetalation of polyisoprene by the complex sec‐butyllithium‐N,N,N′,N′‐tetramethylethylenediamine (secBuLi‐TMEDA) is strongly affected by the conditions of reaction. In certain cases, a first order rate constant with respect to each reagent is observed. The mole ratio secBuLi/TMEDA has a preponderant effect on the rate of metalation. A maximum yield is observed when the mole ratio secBuLi/TMEDA is 1/0,5. Addition of a cocomplexing reagent, potassium tert‐butoxide (tertBuOK), to the complex secBuLi‐TMEDA yields a higher rate of metalation. A good yield can be obtained when polysioprene is treated with the metalating complex secBuLi‐TMEDA‐tertBuOK in a mole ratio of 1/0,5/1.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
