Use of 4-cyanocoumarins as dienophiles in a facile synthesis of highly substituted dibenzopyranones.
نویسندگان
چکیده
A new synthesis of dibenzopyranones 14 is reported via the Diels-Alder cycloaddition of 4-cyanocoumarins 12 with 1-silyloxydienes 10 to give the adducts 13 which are then converted into 14 in one step via treatment with base and loss of the cyano and silyloxy groups.
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ورودعنوان ژورنال:
- Organic letters
دوره 11 3 شماره
صفحات -
تاریخ انتشار 2009