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Novel Cross‐Conjugated Compounds Derived from Tetraethynylethene
Author(s) -
Boldi Armen M.,
Anthony John,
Knobler Carolyn B.,
Diederich François
Publication year - 1992
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.199212401
Subject(s) - conjugated system , derivative (finance) , delocalized electron , electron delocalization , silylation , chemistry , spectroscopy , stereochemistry , photochemistry , organic chemistry , physics , catalysis , polymer , quantum mechanics , financial economics , economics
The oxidative coupling of a tetraethynylethene derivative with a single free ethynyl function afforded a silyl‐protected derivative la , which was characterized by an X‐ray structure analysis. It was protodesilylated to the first C 20 H 6 isomer 1b . Evidence of the expanded π‐electron delocalization in the new cross‐conjugated system comes from UV/VIS spectroscopy.