n-C4H9Li in benzene byproducts: n-C4H10; under atmosphere of ethylene, successive addn. of PMe3 and n-C4H9Li (0.9 M in hexane) to soln. of acrylate complex, room temp., stirring, 40-50 min, evapn. of solvent in vac., extg. with petroleum ether (residue: Li acrylate); products identified by IR and 1H NMR (Li acrylate) and 31P NMR, resp.;