来源:Organic and Biomolecular Chemistry, 2017, 15(11): 2385-2391.
DOI:10.1039/c7ob00294g
摘要
A novel Sn(ii)-catalyzed tandem cyclization reaction of aromatic aldehydes with ethyl cyanoacetate has been achieved to afford a series of 3-substituted azetidine-2,4-diones in good to excellent yields.