(2Z)-2-(3-methyl-5-oxofuran-2-ylidene)acetaldehyde 、
trans-1,2-bis(tert-butyldimethylsilyloxy)-1,2-benzocyclobutene 以
氘代苯 为溶剂,
生成 (2S,3R)-1,4-bis[[tert-butyl(dimethyl)silyl]oxy]-3'-methyl-5'-oxospiro[2,4-dihydro-1H-naphthalene-3,2'-furan]-2-carbaldehyde 、