A Diels-Alder approach to (-)-ovalicin.
نویسندگان
چکیده
A fascinating aspect of the Diels–Alder reaction is its endo selectivity. This endo preference is much less pronounced in intermolecular cases compared with the intramolecular and transannular Diels–Alder (IMDA and TADA) reactions. Nevertheless, high endo selectivity is observed in the Diels– Alder additions of (E)-1-O-substituted dienes catalyzed by Lewis acids that lead to cis-1,6-disubstituted cyclohexene systems of type I (Scheme 1). Compounds of type I could be
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ورودعنوان ژورنال:
- Angewandte Chemie
دوره 46 15 شماره
صفحات -
تاریخ انتشار 2007