Methyl 5-(2-methylprop-2-enoxy)-7-oxobicyclo[4.2.0]octa-1(6),2,4-triene-3-carboxylate 在
chloro(1,5-cyclooctadiene)rhodium(I) dimer 、 (R)-DTBM-SEGPHOS 作用下,
以
1,4-二氧六环 为溶剂,
反应 48.0h,
以61%的产率得到methyl (4R)-4-methyl-6-oxo-2-oxatricyclo[6.3.1.04,12]dodeca-1(11),8(12),9-triene-10-carboxylate