Tuning the Annulation Reactivity of Vinyl Azides and Carbazates: A Divergent Synthesis of Aza-pyrimidinones and Imidazoles
2015
Shao, Jiaan | Liu, Xingyu | Shu, Ke | Tang, Pai | Luo, Jing | Chen, Wenteng | Yu, Yongping
A divergent cascade annulation has been developed using readily available vinyl azides and carbazates with a wide range of substituents. Vinyl azides were successfully applied as bifunctional partners to prepare aza-pyrimidinones via 6-ring closure with carbazates as well as to construct polyfunctionalized imidazoles via 5-ring closure with N-substituted carbazates. The aza-heterocycles were obtained with high levels of chemoselectivity and excellent yields.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
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