Pd-Catalyzed Heteroannulation of Isoxazoles: Convergent Synthesis of Isoxazolo[5,4-C]Quinolines
Tetrahedron letters(2023)
摘要
Variously substituted isoxazolo[5,4-c]quinolines can be easily prepared in high yields by Pd-catalyzed heteroannulation of 5-carbonyl-4-haloisoxazoles with 2-aminophenylboronic acid derivatives. 4-Unsubstituted isoxazolo[5,4-c]quinolines can be readily modified at C4 via a chlorination/substitution sequence.
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关键词
Heteroannulation,IsoxazolesIsoxazolo[5,4-c]quinolines,2-Aminophenylboronic acid,Pd-catalyzed,Cross-coupling
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