2-(4-ethylbenzyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 、 (3'R,4'S,5S,5'R,6'R)-3',4',5'-tris-benzyloxy-6'-benzyloxymethyl-3-iodo-3',4',5',6'-tetrahydro-spiro[thieno[2,3-f]isobenzofuran-5(7H),2'-[2H]pyran] 在
(1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride potassium carbonate 、
silver(l) oxide 作用下,
以
1,4-二氧六环 为溶剂,
反应 3.0h,
以79%的产率得到(3'R,4'S,5S,5'R,6'R)-3',4',5'-tris-benzyloxy-6'-benzyloxymethyl-3-[(4-ethylphenyl)methyl]-3',4',5',5'-tetrahydro-spiro[thieno[2,3-f]isobenzofuran-5(7H),2'-[2H]pyran]