Etherification of (E)-1,3-Diaryl- and (E)-1,3-Diheteroaryl- Prop-2-en-1-ols with Primary and Secondary Alcohols over Platinum on Carbon
作者:Thies Thiemann
DOI:10.3184/030823407x24775
日期:2007.9
In the presence of platinum on carbon (Pt/C), (E)-1,3-diaryl- and (E)-1,3-diheteroaryl- prop-2-en-1-ols react with primary and secondary alcohols to give (E)-1,3-diaryl- and (E)-1,3-diheteroaryl- prop-2-enyl ethers.
Improved Dimethylsulfoxonium Methylide Cyclopropanation Procedures, Including a Tandem Oxidation Variant
作者:Richard Taylor、Richard Paxton
DOI:10.1055/s-2007-967966
日期:——
for the cyclopropanation of α,β-unsaturated carbonyl compounds and related systems is described which employs trimethylsulfoxonium iodide and an organic base in acetonitile to generate dimethylsulfoxoniummethylide in situ; in addition, preliminary results are described in which activated alcohols are converted directly into cyclopropyl ketones by a one-pot tandem oxidation-cyclopropanation sequence