1,3-Benzodioxole → 1-Acetoxy-2-Methyl-3-(3,4-Methylenedioxyphenyl)Propene
Reaction equation
[CH2:1]1[O:9][C:4]2[CH:5]=[CH:6][CH:7]=[CH:8][C:3]=2[O:2]1.[CH3:10][C:11]([CH:13](OC(=O)C)[O:14][C:15](=[O:17])[CH3:16])=[CH2:12]>>[C:15]([O:14][CH:13]=[C:11]([CH3:12])[CH2:10][C:6]1[CH:7]=[CH:8][C:3]2[O:2][CH2:1][O:9][C:4]=2[CH:5]=1)(=[O:17])[CH3:16]Participants
3
Procedure
The production process (A) comprises the steps of (1) reacting 1,2-methylenedioxybenzene and 2-methyl-3,3-diacetoxypropene with each other to produce 1-acetoxy-2-methyl-3-(3,4-methylenedioxyphenyl)-1-propene; and (2) subjecting the obtained 1-acetoxy-2-methyl-3-(3,4-methylenedioxyphenyl)-1-propene to hydrolysis reaction or to transesterification reaction with an alcohol, followed by subjecting the resulting reaction mixture to distillative purification, to thereby adjust a content of 1-acetyl-3,4-methylenedioxybenzene as a by-product in the 2-methyl-3-(3,4-methylenedioxyphenyl)propanal to from 50 to 3000 ppm.
Sources & evidence
- ORD record
- ord-510cb77538a34a57a6b177845e22c320
- Source dataset
- uspto-grants-2013_01
- Patent number
- US08344166B2
Reaction notes
Loading…