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Palladium(0)‐Catalyzed Synthesis of Cross‐Conjugated Polymers: Transformation into Linear‐Conjugated Polymers through the Diels–Alder Reaction
Author(s) -
Nishioka Noriyuki,
Hayashi Shotaro,
Koizumi Toshio
Publication year - 2012
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201200303
Subject(s) - conjugated system , polymer , palladium , catalysis , chemistry , polymer chemistry , photochemistry , organic chemistry , combinatorial chemistry
Making the shift : The title reaction of a propargylic bis(carbonate) with diboron compounds leads to new cross‐conjugated polymers 1 having 2,3‐butadienylene moieties. 1 is then converted into the linear‐conjugated polymers 2 through a Diels–Alder reaction. The fluorescent spectra of the cis ‐linked polymers 2 show large Stokes shifts compared to those of the cross‐conjugated polymer precursors 1 .