Highly Enantioselective Direct Michael Addition of 1H-Benzotriazole to Chalcones Catalyzed by Sc(OTf)3/N,N′-Dioxide Complex
作者:Jing Wang、Wentao Wang、Xiaohua Liu、Zongrui Hou、Lili Lin、Xiaoming Feng
DOI:10.1002/ejoc.201100021
日期:2011.4
The N,N′-dioxide–Sc(OTf)3 complex was applied in the asymmetric Michael reaction of 1H-benzotriazole with chalcones to give the corresponding N-1 products in excellent yields (up to 99 %) with excellent enantioselectivities (up to 99 % ee). Further transformation into other optically active derivatives such as β-benzotriazolyl ester, alcohol, and amide were also realized with excellent results.
N,N'-二氧化物-Sc(OTf)3 配合物用于 1H-苯并三唑与查耳酮的不对称迈克尔反应,以优异的产率(高达 99%)得到相应的 N-1 产物,并具有优异的对映选择性(高达99% ee)。进一步转化为其他光学活性衍生物,如β-苯并三唑基酯、醇和酰胺也取得了优异的成果。