甲醛

2-[tert-butyl(dimethyl)silyl]oxybenzaldehyde

2-((1S,4S)-spiro[bicyclo[2.2.1]heptane-2,5'-[1,3]dioxan]-5-en-2'-yl)phenol

salicylaldehyde diphenyl dithioacetal

2-碘苯甲醛