反応式
[Cl:1][C:2]1[CH:9]=[CH:8][CH:7]=[C:6]([OH:10])[C:3]=1[CH:4]=[O:5].Br[CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH3:20]>>[Cl:1][C:2]1[CH:9]=[CH:8][CH:7]=[C:6]([O:10][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH3:20])[C:3]=1[CH:4]=[O:5]参加物
実験手順
2-chloro-6-hydroxy-benzaldehyde was alkylated with 1-bromononane as in Example 1 to give 2-chloro-6-nonyloxy benzaldehyde. Reduction with sodium borohydroxide as in Example 1 gave 2-chloro-6-nonyloxy benzyl alcohol which on treatment with triphenylphosphine hydrobromide in acetonitrile as in Example 1 yielded [[2-chloro-6-nonyl-oxy]phenyl]methyl]triphenyl phosphonium bromide. Condensation with 7-formyl-3-methyl-2,4,6-octatrienoic acid ethyl ester as described in Example 3 produced (All E)-9-[2-chloro-6(nonyloxy)phenyl]-3,7-dimethyl-2,4,6,8-nonatetraenoic acid ethyl ester. The ester was subjected to hydrolysis as in Example 5, to produce (All-E)-9-[2-chloro-6-(nonyloxy)phenyl]-3,7-dimethyl-2,4,6,8-nonatetraenoic acid mp 129°-131° (from ethyl acetate/hexane mixture).
出典と根拠
- ORDレコード
- ord-b631cf0d3cff4641a751f1b51de0f77d
- 出典データセット
- uspto-grants-1990_01
- 特許番号
- US04894480
関連ノート
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