期刊
CHEMICAL COMMUNICATIONS
卷 54, 期 85, 页码 12033-12036出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8cc05706k
关键词
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A copper-catalyzed asymmetric propargylic [3+3] cycloaddition with 1H-pyrazol-5(4H)-ones as C,O-bisnucleophiles through the desilylation-activated strategy has been developed. With the catalysis of Cu(OAc)(2)H2O in combination with a chiral tridentate P,N,N-ligand, the reaction displayed a broad substrate scope, and thus provided a variety of chiral dihydropyrano[2,3-c]pyrazoles in high yields and with excellent enantioselectivities (up to 96% ee).
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