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A Macrocyclic Tetraazapolyene – Synthesis and Configuration
Author(s) -
Thilgen Carlo,
Vögtle Fritz
Publication year - 1991
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19911240335
Subject(s) - azine , chemistry , polyene , chromophore , hydrazine (antidepressant) , hydrate , yield (engineering) , diketone , stereochemistry , double bond , photochemistry , polymer chemistry , organic chemistry , materials science , chromatography , metallurgy
The new macrocyclic bis(azine) 2 forming yellow microcrystals has been prepared in 72% yield by treating the diketone 1 with hydrazine hydrate under high‐dilution conditions. In contrast to the UV/Vis spectrum of the “open‐chain” azine 4 , that of 2 shows characteristic features of a polyene chromophore containing (Z)‐configurated double bonds.