Reactions of thiobenzoylketene S,N-acetals with silyl enol ethers of cyclic ketones in the presence of desilylating reagents: formation and desulfurization of thienolactams
Unexpected nucleophilic behaviour of free-radicals generated from α-iodoketones
作者:Corinne De Dobbeleer、Jiří Pospíšil、Freija De Vleeschouwer、Frank De Proft、István E. Markó
DOI:10.1039/b901943j
日期:——
The unexpected nucleophilic reactivity of free-radicals generated from α-iodoketones is reported; two different procedures, either employing tin or the more environmentally acceptable ethylsulfone-based coupling reagent 5c have been developed.
Novel chiral building blocks derived from Baker's yeast reduction products: Synthesis and odour of mono- and bicyclic macrolides
作者:Birgit Bollbuck、Werner Tochtermann
DOI:10.1016/s0040-4020(99)00362-2
日期:1999.6
A number of bicyclic macrolides with two stereogenic centres formally derived from ω-cycloalkyl fatty acids were synthesised by ring enlargement of cycloalkanones with novel chiralbuildingblocks, easily available from yeast reduction products of β-keto esters. A comparison with structurally related monocyclic macrolides revealed surprising effects of structural variations on the olfactory properties