A set of experiments in surface-initiated ring-opening metathesis polymerization, including end-functionalization of growing brushes and contact angle/cyclic voltammetry measurements. We report preparation and CV of two different conjugated polymer films, and several endgroup and sidechain functionalization experiments using cross-metathesis and active ester substitution.<br>
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<p>The synthesis of conjugated triynes by
molybdenum-catalyzed alkyne metathesis is reported.
Strategic to the success of this approach is the utilization
of sterically-hindered diynes that allowed for the site-
selective alkyne metathesis to produce the desired con-
jugated triyne products. The steric hindrance of alkyne
moiety was found to be crucial in preventing the for-
mation of diyne byproducts. This novel synthetic strategy
was amenable to self- and cross-metathesis providing
straightforward access to the corresponding symmetrical and dissymmetrical triynes with high selectivity.
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AbstractA concise and convergent stereoselective synthesis of curvulone B is described. The synthesis utilized a tandem isomerization followed by C–O and C–C bond-forming reactions following Mukaiyama-type aldol conditions for the construction of the trans-2,6-disubstituted dihydropyran ring system as the key steps. Other important features of this synthesis are a cross-metathesis, epimerization, and Friedel–Crafts acylation.
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