A Lewis Acid Mediated Intramolecular [2+2] Cycloaddition of 3-(9-Methylundeca-7,9-dienyl)-9-methylene-2,8-dioxabicyclo[4.3.0]nonane-5,7-dione
摘要:
Treatment of 3-(9-methylundeca-7,9-dienyl)-9-methylene-2,8-dioxabicyclo[4.3.0]nonane-5,7-dione (3) with SnCl4 in CH2Cl2 at -80-degrees-C produced intramolecular [2+2] cycloadducts (6a-d) rather than intramolecular Diels-Alder adducts.
A Lewis Acid Mediated Intramolecular [2+2] Cycloaddition of 3-(9-Methylundeca-7,9-dienyl)-9-methylene-2,8-dioxabicyclo[4.3.0]nonane-5,7-dione
摘要:
Treatment of 3-(9-methylundeca-7,9-dienyl)-9-methylene-2,8-dioxabicyclo[4.3.0]nonane-5,7-dione (3) with SnCl4 in CH2Cl2 at -80-degrees-C produced intramolecular [2+2] cycloadducts (6a-d) rather than intramolecular Diels-Alder adducts.