1-bromo-butane; water in diethyl ether byproducts: all-trans-1,5,9-cyclododecatriene; N2 atmosphere; addn. of PhLi to the triphenylstannyl compd. in ether atroom temp.; stirring at room temp. for 1 h; addn. of 1-bromobutane; stirring for 2 h; hydrolysis with water;; extg. (ether); washing (water); drying; evapn. of solvent; dissolution in acetone; filtration of Sn(C6H5)4;;

phenyllithium in diethyl ether; benzene 1 h; Ambient temperature;