Bicyclo[2,2,2]oct-1-ene; formation from 1-ethoxybicyclo[2,2,2]oct-2-yl-lithium and reaction with t-butyl-lithium

Abstract
Rection of 2-bromo-1-ethoxybicyclo[2,2,2]-octane (1b) with t-butyl-lithium at low temperature afforded 1-ethoxybicyclo[2,2,2]oct-2-yl-lithium (1a); above 0°(1a) slowly eliminated lithium ethoxide with formation of lthe anti-Bredt olefin bicyclo[2,2,2]oct-1-ene (4) which was trapped by t-butyl-lithium

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