Methylenations of heteroatom-substituted carbonyls with dimethyl titanocene
作者:Nicos A. Petasis、Shao-Po Lu
DOI:10.1016/0040-4039(95)00320-c
日期:1995.4
Reaction of dimethyl titanocene with a variety of heteroatom-substituted carbonylcompounds, including: silylesters, anhydrides, carbonates, amides, imides, thioesters, selenoesters and acyl silanes gives the corresponding heteroatom-substituted alkenes.
Enantiomerically pure compound synthesis by asymmetric glyoxylate–ene reaction with vinylic sulfides and selenides catalysed by a chiral titanium complex
作者:Masahiro Terada、Satoru Matsukawa、Koichi Mikami
DOI:10.1039/c39930000327
日期:——
Asymmetriccatalysis of the glyoxylate–ene reaction with vinylic sulfides and selenides by a binaphthol-derivedtitaniumcomplex provides enantiomerically pure (e.p.) diastereoisomers (anti and Z) of β-alkyl-α-hydroxy esters.
Tandem radical rearrangement/Pd-catalysed translocation of bicyclo[2.2.2]lactones. An efficient access to the oxa-triquinane core structure
作者:Jyh-Hsiung Liao、Nuno Maulide、Benoît Augustyns、István E. Markó
DOI:10.1039/b518121f
日期:——
The skeletal rearrangement of bicyclo[2.2.2]lactones, involving a mild and chemoselective palladium-catalysed translocation key-step, provides an efficient and diastereoselective access to synthetically useful bicyclo[3.3.0]lactones.
Skeletal rearrangements of bicyclo[2.2.2]lactones: a short and efficient route towards Corey’s lactone
作者:Benoıˆt Augustyns、Nuno Maulide、István E. Markó
DOI:10.1016/j.tetlet.2005.03.204
日期:2005.5
The application of a unique tandem radical-initiated, Brönsted acid-catalysed, skeletal rearrangement of bicyclo[2.2.2]lactones provides a novel route towards Corey’s lactone 2. The strategy also features a high-pressure promoted inverse electron-demand Diels–Alder (IEDDA) reaction of 3-carbomethoxy-2-pyrone (3-CMP), which proceeds with complete regio- and diastereocontrol.