Tertiaryaminoalkyllithium initiators and the preparation thereof

摘要

Relatively pure tertiaryaminoalkyllithium initiators suitable for anionic polymerization reactions are prepared at low temperatures in an organic ether by reacting an equivalent excess of lithium metal with a tertiaryaminoalkylhalide. The lithium initiators are very stable at moderate temperatures when the ether is replaced by an aliphatic, a cycloaliphatic, or an aromatic solvent. Yields of the initiator in excess of 98% are readily achieved.