巴豆酸异丁酯

1-diazo-4,5-dimethylhex-4-en-2-one

1-dimethoxyphosphoryl-4-methylpent-3-en-2-one

3-氯-3-甲基-1-丁炔

methyl 2,4,4-trimethyl-5-methylene-4,5-dihydro-3-furoate