The Formation of a Mixed Organolithium Aggregate Li4R2nBu2 during the Heteroatom‐Assisted Lithiation of 1,3‐Bis(dimethylaminomethyl)‐2,4,6‐trimethylbenzene (R = 2,6‐(CH2NMe2)2‐3,5‐Me2C6HCH2)

Lithiated 1 and unreacted n-butyllithium in a 2:2 ratio make up the title aggregate 2, which is formed in the reaction of 1 with two equivalents of n-butyllithium (shown below). Species such as 2 can be regarded as intermediates in heteroatom-facilitated lithiation reactions.