Andrew H. Payne

TL;DR: In this article, a variety of α,β-unsaturated ketones with Mn(dpm)3 (3 mol%)/PhSiH3 (1.3 equiv.)/isopropyl alcohol/O2, followed by reductive work-up with P(OEt)3 resulted in the formation of α-hydroxyketones.

TL;DR: In this article, the authors described a procedure for the conversion of the α,β-unsaturated ester using conjugate reduction of α-hydroxylation and α-decarboxylation.

TL;DR: In this paper, the key intermediate homoannular diene was converted into (±)-11,12-demethoxylahadinine via conjugate reduction and oxidation of 15 with Mn(dpm)2/PhSiH3/O2 at 0°C.

Abstract: A newly synthesized light emitting compound 9,10-dimethylsulfone-7,12-diphenylbenzo[k]fluoranthene (DSDPBF) and its synthetic intermediate 9,10-dimethyl-7,12-diphenylbenzo[k]fluoranthene (DMDPBF) were studied to evaluate how the addition of weak electron donating methyl groups and the subsequent addition of an electron withdrawing sulfone group affect the photophysical and electrochemical properties as well as the rate of radical cation coupling of the parent compound, 7,12-diphenylbenzo[k]fluoranthene (DPBF). Although the photochemical and electrochemical properties of DSDPBF were more similar to the unsubstituted DPBF than to the DMDPBF, there was a substantial decrease in the quantum efficiency upon addition of the electron-rich sulfone group which was not observed upon addition of the methyl groups. On the other hand, the rate of radical cation coupling or dimerization observed upon electrochemical oxidation varied significantly. The addition of the electron donating methyl groups decreased the reacti...

TL;DR: A double Bischler-Napieralski reaction of the 11-membered ring carbamate 15 gave the homoannular diene 17 in a single step as mentioned in this paper.