trifluoro-methanesulfonic acid 8-oxa-spiro[4.5]dec-1-en-1-yl ester 、 methyl 2-((S)-6-((R)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-1H-inden-1-yloxy)-2,3-dihydrobenzofuran-3-yl)acetate 在
1,1'-双(二苯膦基)二茂铁二氯化钯(II)二氯甲烷复合物 potassium phosphate 作用下,
以
四氢呋喃 为溶剂,
反应 5.0h,
以75%的产率得到{(3S)-6-[(1R)-4-(8-oxa-spiro[4.5]dec-1-en-1-yl)-indan-1-yloxy]-2,3-dihydro-benzofuran-3-yl}-acetic acid methyl ester