I. Cragghine et al., DILITHIATION OF 2 DIPHENYL ETHERS EACH CONTAINING 2 NHCH2CH2Y (Y=OME,NME2) SIDE ARMS IN ORTHO POSITIONS - ASSEMBLY OF ADAMANTANOID LI4O2N4CORES, Angewandte Chemie, International Edition in English, 32(8), 1993, pp. 1182-1184
No N2Li2 units are formed on dilithiation of the RNH-substituted ether
s 1 and 2. Instead. the dimerization of two monomers leads to adamanta
noid structures with Li4O2N4 frameworks and CH2CH2OMe and CH2CH2NMe2 s
ide arms that are crucial for dimer formation. The adamantanoid struct
ure of the Li2 compound prepared from 1 also persists in solution.