Intramolecular Diels-Alder reactions of silyl acetal trienes. Dienophile-controlled cycloadditions of ‘matched’ and ‘unmatched’ dimethylated substrates
作者:Donald Craig、John C. Reader
DOI:10.1016/s0040-4039(00)60033-3
日期:1992.10
intramolecular Diels-Alder reaction of a mixture of silyl acetal trienes 5 and 6 followed by HF-mediated removal of the silicon tether gives in high overall yield the cyclic diol-esters 9 and 10. Compound 10 is converted selectively under acid catalysis into hydroxylactone 11. The structure of 9 and 11 are established by X-ray crystallography. The highly stereoselective nature of the IMDA reactions of 5 and 6 implied