Butyl 3,7-dimethyl-8-oxoocta-2,4,6-trienoate → 9-(2,3,4,6-Tetra-methyl-phenyl)-3,7-dimethyl-nona-2,4,6,8-tetraen-1-oic acid
Reaction equation
C([O:5][C:6](=[O:27])[CH:7]=[C:8]([CH3:26])[CH:9]=[CH:10][CH:11]=[C:12]([CH3:25])[CH:13]=[CH:14][C:15]1[C:20]([CH3:21])=[CH:19][C:18]([CH3:22])=[C:17]([CH3:23])[C:16]=1[CH3:24])CCC.[Cl-].CC1C(C)=C(C)C=C(C)C=1C[P+](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.C(OC(=O)C=C(C)C=CC=C(C=O)C)CCC>>[CH3:24][C:16]1[C:17]([CH3:23])=[C:18]([CH3:22])[CH:19]=[C:20]([CH3:21])[C:15]=1[CH:14]=[CH:13][C:12]([CH3:25])=[CH:11][CH:10]=[CH:9][C:8]([CH3:26])=[CH:7][C:6]([OH:27])=[O:5]Participants
4
Reactant 3
Product 1
Procedure
By the procedure of Example 14, 9-(2,3,4,6-tetramethyl-phenyl)-3,7-dimethyl-nona-2,4,6,8-tetraen-1-oic acid butyl ester is manufactured from 2,3,4,6-tetramethyl-benzyltriphenylphosphonium chloride by reaction with 7-formyl-3-methyl-octa-2,4,6-trien-1-oic acid butyl ester. From this product, there is produced by the procedure of Example 15 9-(2,3,4,6-tetra-methyl-phenyl)-3,7-dimethyl-nona-2,4,6,8-tetraen-1-oic acid of melting point 201°-202° C.
Sources & evidence
- ORD record
- ord-2da8e37389a241cdbbad06bdd49a59fd
- Source dataset
- uspto-grants-1985_07
- Patent number
- US04532355
Reaction notes
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