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Direct Synthesis of Metal‐Free 1,8‐Dihydrotetraaza‐[14]annulenes Utilizing the Metal‐Template Effect
Author(s) -
Mühmel Gerhold,
Breitmaier Eberhard
Publication year - 1978
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.197807721
Subject(s) - ionic radius , annulene , metal , ionic bonding , radius , chemistry , inorganic chemistry , crystallography , materials science , stereochemistry , metallurgy , ion , organic chemistry , computer science , computer security
A variant of the metal template synthesis leads to metal‐free ligands if the ionic radius of M n + is significantly lower ( e.g. Mg 2+ ) or higher than 70 pm ( e.g. Mn 2+ ). Yields in the presence of M n + can far exceed those obtained in the absence of M n + . Compound (1) is obtained from enediamine and MX.
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