β‐Diazocarbonyl Compounds: Synthesis and their Rh(II)‐Catalyzed 1,3 C−H Insertions
作者:Liyin Jiang、Zhaofeng Wang、Melanie Armstrong、Marcos G. Suero
DOI:10.1002/anie.202015077
日期:2021.3.8
of ketone silyl enol ethers with diazomethyl‐substituted hypervalent iodine reagents that gives access to unusual β‐diazocarbonyl compounds. The potential of this unexplored class of diazo compounds for the development of new reactions was demonstrated by the discovery of a rare Rh‐catalyzed intramolecular 1,3 C−H carbene insertion that led to complex cyclopropanes with excellent stereocontrol.
A general and stereoselective method for synthesis of tri- and tetrasubstituted alkenes
作者:I Maciągiewicz、P Dybowski、A Skowrońska
DOI:10.1016/s0040-4020(03)00977-3
日期:2003.8
A convenient, general and stereoselectivesynthesis of trisubstituted alkenes and tetrasubstituted alkenes containing a cyanide function as well as trisubstituted episulphides have been elaborated. Methodology described for the preparation of these compounds is based on the corresponding readily available selenophosphates 1 and thiophosphates 2.