1,3,3-Trimethyl-6-aza-bicyclo[3.2.1]octane-6-carbaldehyde 、 3-(2,3-Dihydro-benzo[1,4]dioxin-6-yl)-6-ethyl-7-hydroxy-4-oxo-4H-chromene-2-carboxylic acid ethyl ester 以
1,4-二氧六环 为溶剂,
反应 3.0h,
生成
ethyl 3-(2,3-dihydrobenzo[1,4]dioxan-6-yl)-6-ethyl-7-hydroxy-4-oxo-8-(1,3,3-trimethyl-6-aza-bicyclo[3.2.1]oct-6-ylmethyl)-4H-chromene-2-carboxylate