Citation:
Xiushuai Chen, Chuanjin Hou, Qing Li, Yanjun Liu, Ruifeng Yang, Xiangping Hu. Enantioselective synthesis of chiral phosphonylated 2,3-dihydrofurans by copper catalyzed asymmetric formal [3+2] cycloaddition of propargylic esters with β-keto phosphonates[J]. Chinese Journal of Catalysis,
;2016, 37(8): 1389-1395.
doi:
10.1016/S1872-2067(16)62488-9
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Copper catalyzed asymmetric formal [3+2] cycloaddition of propargylic esters to β-keto phosphonates for the synthesis of chiral phosphonylated 2,3-dihydrofurans was developed. By using a bulky and structurally rigid tridentate ketimine P,N,N ligand, a series of optically active phosphonylated 2,3-dihydrofurans were prepared in high yield and up to 92% ee.
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