Catalytic Conjugate Addition of Electron-Rich Heteroarenes to β,β-Disubstituted Enones
作者:Tanner L. Metz、Joshua Evans、Levi M. Stanley
DOI:10.1021/acs.orglett.7b01402
日期:2017.7.7
Catalytic conjugateadditions of heteroarenes to β,β-disubstituted enones are reported. Additions of a range of heteroarene nucleophiles, including furans, indoles, a pyrrole, and a thiophene, to a variety of β,β-disubstituted enones occur to form the corresponding ketone products containing heteroarylated, all-carbon quaternary centers in up to 90% yield. These reactions occur under mild reaction
An easy route to 11-hydroxy-eudesmanolides. Synthesis of (±) decipienin A
作者:F. Javier Moreno-Dorado、Francisco M. Guerra、F. Javier Aladro、Jesús M. Bustamante、Zacarías D. Jorge、Guillermo M. Massanet
DOI:10.1016/s0040-4020(99)00328-2
日期:1999.5
The preparation of 11-hydroxy-eudesmanolides with the stereochemistry found in the Umbelliferae family of plants is described. The decalin system of the eudesmane skeleton is produced by the addition of 5-methyl-2-furyllithium to 3-ethoxycyclohex-2-enone and acidic treatment of the resulting adduct. The stereochemistry of the decalones obtained by this method has been corrected. The α-hydroxy-γ-lactone