Enantioselective synthesis of indanone spiro-isochromanone derivatives <i>via</i> a dinuclear zinc-catalyzed Michael/transesterification tandem reaction
作者:Xiao-Chao Yang、Meng Xu、Jin-Bao Wang、Meng-Meng Liu、François Mathey、Yuan-Zhao Hua、Min-Can Wang
DOI:10.1039/d0ob00541j
日期:——
An enantioselective Michael/transesterificationtandemreaction of α-hydroxy indanones with ortho-ester chalcones was realized using dinuclear zinc catalysts. A series of enantiomerically pure spiro[indanone-2,3'-isochromane-1-one] derivatives were obtained in good yields with excellent stereoselectivities (up to >20 : 1 dr, up to >99% ee). This protocol could be conducted on a gram scale without affecting