Dienolates Derived from Unsaturated Carboxylic Acids in Synthesis. Four-Carbon Annellation of Cycloalkanones; Improved Synthesis of Bicyclo[n.4.0]alken-2-ones
BALLESTER, P.;GARCIA-RASO, A.;MESTRES, R., SYNTHESIS, BRD, 1985, N 8, 802-806
作者:BALLESTER, P.、GARCIA-RASO, A.、MESTRES, R.
DOI:——
日期:——
Synthesis of conjugated γ- and δ-lactones from aldehydes and ketones via a vinylation(allylation)-ring closing metathesis–oxidation sequence
作者:J.Alberto Marco、Miguel Carda、Santiago Rodrı́guez、Encarnación Castillo、Marı́a N. Kneeteman
DOI:10.1016/s0040-4020(03)00584-2
日期:2003.6
aldehydes and ketones followed by O-allylation of the obtained carbinols gave the corresponding allyl or homoallyl ethers, respectively. Ring-closing metathesis of these compounds afforded in many cases cyclic ethers (dihydrofurans and dihydropyrans, respectively) bearing disubstituted and trisubstituted CC bonds. These were then subjected to allylic oxidation to yield conjugated γ- and δ-lactones. Reasons
Dienolates Derived from Unsaturated Carboxylic Acids in Synthesis. Four-Carbon Annellation of Cycloalkanones; Improved Synthesis of Bicyclo[n.4.0]alken-2-ones