Regioselective Carbon–Carbon Bond Cleavage in the Oxidation of Cyclopropenylcarbinols
作者:Ahmad Basheer、Masaaki Mishima、Ilan Marek
DOI:10.1021/ol201581c
日期:2011.8.5
The strained double bond of cyclopropenylcarbinols undergoes a facile oxidation reaction to lead to unsaturated carbonyl derivatives. The distribution of the formed products depends on the relative stability of carbon-centered radical species, and the Sharpless kinetic resolution leads to enantiomerically pure Baylis–Hillman enal adducts.
Chemistry of singlet oxygen. Dye-sensitized photooxygenation of arylallenes
作者:Ihsan Erden、Tomas R. Martinez
DOI:10.1016/s0040-4039(00)85981-x
日期:1991.4
1-Arylallenes react with singletoxygen via 1,2-and 1,4-cycloaddition modes giving rise to three types of carbonyl fragments. 1,1-Diphenyl- and 1-methyl-1-phenylallenes react predominantly by the 1,4-mode. Plausible mechanisms are discussed for the formation of the observed products.