The utility of vinyl ethers and vinyl esters in the Khand reaction. The value of vinyl esters as ethylene equivalents and a modified synthesis of (+)-taylorione as an example
作者:William J. Kerr、Mark McLaughlin、Peter L. Pauson、Sarah M. Robertson
DOI:10.1016/s0022-328x(01)00891-9
日期:2001.7
alkenes in the Khand cyclisation reaction has been studied. Although several vinylethers reacted to give the expected oxygenated cyclopentenone products, usually with good levels of regioselectivity, the use of vinyl esters was found to afford, as the major products, reduced cyclopentenones in which the carbon–oxygen bond had been cleaved. This unexpected reaction was developed into an alternative
Unusual, selective, reductive, deoxygenation of cyclopentenone alcohols
作者:Suhas R. Bavikar、Trupti P. Lasonkar、Subhash P. Chavan、Hanumant B. Borate
DOI:10.1016/j.tetlet.2014.07.122
日期:2014.9
A selective, reductive, deoxygenation of 2-aryl-4-hydroxycyclopent-2-en-1-ones to afford 2-aryl-cyclopent-2-en-1-ones was achieved by NaBH4–CeCl3 in methanol.