SmI<sub>2</sub>/Pd(0)-Mediated Intramolecular Coupling between Propargylic Esters and Tethered Aldehydes or Ketones
作者:José M. Aurrecoechea、Roberto Fañanás、Mónica Arrate、José M. Gorgojo、Natalia Aurrekoetxea
DOI:10.1021/jo9819133
日期:1999.3.1
chelating trivalent samarium and facilitating retroaldol-aldol-type equilibria in the product. In this latter case, the strategic combination of chemoselective carbonyl addition and SmI(2)/Pd(0)-promoted cyclization provides ready and convenient stereocontrolled access to functionalized cyclopentanols from unprotected 1,5-dicarbonyl starting materials. The analogous formation of cyclohexanols is limited by