tert-butyl 5-chloro-3-oxopentanoate

tert-butyl 3-oxopent-4-enoate

tert-butyl 3-hydroxypenta-2,4-dienoate

5-O-tert-butyl 1-O-ethyl 3-methylpentanedioate

N-叔丁基-2-甲氧基苯甲酰胺