A General Palladium-Catalyzed Carbonylative Synthesis of 2-Alkylbenzoxazinones from 2-Bromoanilines and Acid Anhydrides
作者:Xiao-Feng Wu、Helfried Neumann、Matthias Beller
DOI:10.1002/chem.201202142
日期:2012.10.1
(C), its (O)K! An efficient palladium‐catalyzed carbonylativesynthesis of 2‐alkylbenzoxazinones has been developed (see scheme). By starting from 2‐bromoanilines and acidanhydrides, the corresponding products were isolated in good yields.
Synthesis and Evaluation of Structurally Constrained Quinazolinone Derivatives as Potent and Selective Histamine H<sub>3</sub> Receptor Inverse Agonists
A series of structurally constrained derivatives of the potent H 3 inverse agonist 1 was designed, synthesized, and evaluated as histamine H 3 receptor inverse agonists. As a result, the N-cyclobutylpiperidin-4-yloxy group as in 2f was identified as an optimal surrogate structure for the flexible 1-pyrrolidinopropoxy group of 1. Subsequent optimization of the quinazolinone core of 2f revealed that