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Dilithiation of Two Diphenyl Ethers Each Containing Two NHCH 2 CH 2 Y (Y = OMe, NMe 2 ) Side Arms in ortho Positions: Assembly of “Adamantanoid” Li 4 O 2 N 4 Cores
Author(s) -
CraggHine Ian,
Davidson Matthew G.,
Kocian Oldrich,
Mair Francis S.,
Pohl Ehmke,
Raithby Paul R.,
Snaith Ronald,
Spencer Neil,
Stoddart J. Fraser
Publication year - 1993
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199311821
Subject(s) - dimer , side chain , chemistry , monomer , stereochemistry , crystallography , polymer chemistry , organic chemistry , polymer
No N 2 Li 2 units are formed on dilithiation of the RNH‐substituted ethers 1 and 2 . Instead, the dimerization of two monomers leads to adamantanoid structures with Li 4 O 2 N 4 frameworks and CH 2 CH 2 OMe and CH 2 CH 2 NMe 2 side arms that are crucial for dimer formation. The adamantanoid structure of the Li 2 compound prepared from 1 also persists in solution.