Helvetica Chimica Acta p. 1264 - 1272 (1991)
Update date:2022-08-03
Topics:
Bartlome, Andreas
Staempfli, Urs
Neuenschwander, Markus
'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.
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