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Synthese von ‘Push‐Pull’‐Oligoacetylenen
Author(s) -
Bartlome Andreas,
Stämpfli Urs,
Neuenschwander Markus
Publication year - 1991
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19910740614
Subject(s) - push pull , chemistry , acylation , combinatorial chemistry , simple (philosophy) , push and pull , stereochemistry , organic chemistry , electrical engineering , mechanical engineering , catalysis , engineering , philosophy , epistemology
Synthesis of ‘Push‐Pull’‐OligoAcetylenes ‘Push‐pull’ triacetylenes 11a , b , c , as well as ‘push‐pull’ tetraacetylene 13b have been prepared by reaction of the corresponding trichloroene(oligoinyl)amines 9 and 10 with 2 mol‐equiv. of BuLi followed by acylation. The sequences ( Schemes 3 and 4 ) are very simple and straightforward, they could in principle be applied to the synthesis of ‘push‐pull’ pentaAcetylenes 15 and hexaacetylenes 17 ( Scheme 5 ). Main limitations are the moderate yields as well as the low thermal stability of push‐pull oligoacetylenes.