3,4-二氢-2H-吡喃

2-(trifluoromethyl) 4-(4-(hydroxymethyl) 4-methyl 2,5-dioxo 1-imidazolidinyl) benzonitrile

水

对甲苯磺酸

ethyl 6-(tert-butyldimethylsilyloxy)-2-oxohexanoate