Isoprene → 1-(1,2-Dimethyl-propyl)-4-methyl-cyclohex-3-enecarbaldehyde

反応式

[CH3:1][CH:2]([CH:7]([CH3:9])[CH3:8])[C:3](=[CH2:6])[CH:4]=[O:5].[CH2:10]=[CH:11][C:12](=[CH2:14])[CH3:13]>>[CH3:1][CH:2]([C:3]1([CH:4]=[O:5])[CH2:10][CH2:11][C:12]([CH3:14])=[CH:13][CH2:6]1)[CH:7]([CH3:9])[CH3:8]

参加物

反応物 2

HCID 6557Isoprene

HCID 30204233,4-Dimethyl-2-methylenevaleraldehyde

生成物 1

HCID 897051761-(1,2-Dimethyl-propyl)-4-methyl-cyclohex-3-enecarbaldehyde収率 49%

反応条件

温度: 160 °C

実験手順

3,4-Dimethyl-2-methylene-pentanal (550 g, obtained as detailed above) and 393 g of isoprene were charged to a Parr Bomb, heated to 160° C., and aged for 12 hours. The rushed over material provided ˜32% recovery of 1-(1,2-dimethyl-propyl)-4-methyl-cyclohex-3-enecarbaldehyde (415 g).