Rh (III)-catalyzed dienylation and cyclopropylation of
1,2,3-benzotriazinones
with alkylidenecyclopropanes (ACPs) has been achieved. Different from
the previous reports of 1,2,3-benzotriazinones, the triazinone ring
remained intact in this C–H bond functionlization reaction.
Also, the denitrogenative cyclopropylation could also be realized
by changing the reaction temperature. This protocol is featured with
high E selectivity, wide substrate scope, and divergent
structures of products.