The intramolecular enyne diels-alder reaction. Stereoselective construction of tricyclic dioxadienones and mechanistic outline
摘要:
4-Methylpent-4-en-2-yn-1-ols and 6-hydroxy-2,3-dihydro-6H pyran 3-ones are condensed in different ways to a series of tricyclic dioxadienones which contain the basic framework of the cadlinolides. A mechanism of the intramolecular enyne-ene cycloisomerization and the origin of the resulting type I and type II dienes is proposed.
The intramolecular enyne diels-alder reaction. Stereoselective construction of tricyclic dioxadienones and mechanistic outline
摘要:
4-Methylpent-4-en-2-yn-1-ols and 6-hydroxy-2,3-dihydro-6H pyran 3-ones are condensed in different ways to a series of tricyclic dioxadienones which contain the basic framework of the cadlinolides. A mechanism of the intramolecular enyne-ene cycloisomerization and the origin of the resulting type I and type II dienes is proposed.
Improved procedure for the synthesis of 6-alkoxy-2,3-dihydro-6h-pyran-3-ones (2,3-dideoxy-dl-pent-2-enopyranos-4-uloses). Neat conversion into polyfunctionalized cyclopentenones
作者:Bernd Mucha、H. Martin、R. Hoffmann
DOI:10.1016/s0040-4039(01)80725-5
日期:1989.1
MUCHA, BERND;HOFFMANN, M. MARTIN R., TETRAHEDRON LETT., 30,(1989) N4, C. 4489-4492