(10R,11R,1'R)-10,11-bis(methoxymethyl)-5-(8-phenyl-1,2,3,4,-tetrahydro-1-naphthalenyliden-2'-thirrane)-10,11-dihydro-3,7-dibromo-5H-dibenzo[a,d]cycloheptene 在
三(二甲胺基)膦 作用下,
以
neat (no solvent) 为溶剂,
反应 12.0h,
以95%的产率得到(10R,11R,R(a))-10,11-bis(methoxymethyl)-5-(8-phenyl-1,2,3,4,-tetrahydro-1-naphthalenylidene)-10,11-dihydro-3,7-dibromo-5H-dibenzo[a,d]cycloheptene