Syntheses of Spiro(2-oxopyrrolidinyl)-5,4′-pyrazolones via Organocatalyzed Michael/Ammonolysis Cascade Reaction of 4-Aminopyrazolones and α,β-Unsaturated Acyl Phosphates.

Autor: Li, You-Fen, Chen, Zheng-Jun, Jiao, Wen-Ya, Chen, Zhi-Jiao, Chen, Lin
Předmět:
Zdroj: Synlett; 2021, Vol. 32 Issue 9, p923-929, 7p
Abstrakt: The efficient organocatalyzed Michael/ammonolysis cascade reaction of N -protected 4-aminopyrazolones and α,β-unsaturated acyl phosphates has been developed. This tactic gives rise to architecturally multifarious spiro(2-oxopyrrolidinyl)-5,4′-pyrazolones in good productiveness (up to 88% yield) and with moderate to good diastereoselectivities (up to 20:1 dr). These novel hybrid heterocycles would be promising candidates for drug-discovery programs and chemical biology. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index