Syntheses and properties of thienyl-substituted dithienophenazines

• Annemarie Meyer,
• Eva Sigmund,
• Friedhelm Luppertz,
• Gregor Schnakenburg,
• Immanuel Gadaczek,
• Thomas Bredow,
• Stefan-S. Jester and
• Sigurd Höger

Beilstein J. Org. Chem. 2010, 6, 1180–1187, doi:10.3762/bjoc.6.135

• . Nevertheless we assume they are oriented along the main crystallographic direction of the HOPG substrate. Ordered adlayers were observed only for 12b, but not for 12a. Moreover, additional terminal alkyl chains terminating the end-capping thiophene substituents of 14, 15 and 18 appear to hinder the formation

Novel multi-responsive P2VP-block-PNIPAAm block copolymers via nitroxide-mediated radical polymerization

• Cathrin Corten,
• Katja Kretschmer and
• Dirk Kuckling

Beilstein J. Org. Chem. 2010, 6, 756–765, doi:10.3762/bjoc.6.89

• reactions, e.g., elimination of the end capping nitroxide group by β-elimination, can occur terminating chain growth. Hence, an increased molecular weight distribution was observed. At 130 °C the reaction was very fast leading to a strong increase in conversion. After 30 min 40% of polymer was obtained

Phase- vanishing halolactonization of neat substrates

• Nicole Windmon and
• Veljko Dragojlovic

Beilstein J. Org. Chem. 2008, 4, No. 29, doi:10.3762/bjoc.4.29

• . Finally, due to a low boiling point of FC-72, a considerable amount of it may evaporate in the course of longer reactions unless the reaction vessel is capped. Capping a vial is not always feasible as the reaction byproduct is a gas. In our hands, on ~5 g scale, there were no problems when reaction was