The AgOAc-catalysed reaction of 3-nitro-2-phenyl-2H-chromenes with stabilized azomethine ylides generated from the imines based on methyl glycinate and arylaldehydes leads to a mixture of endo and endo’ isomers of the corresponding chromeno[3. 4-c]pyrrolidines in a ratio of 2. 0–2. 3:1 in 85–93% total yields as a result of a Michael addition/Mannich reaction sequence. https://macorners.shop/product-category/shaking-head-acrylic-standee/