Nitric Acid → HCID 54278759, compound
Reaction equation
[CH3:1][CH2:2]/[C:3](=[C:11](/[CH2:19][CH3:20])\[C:12]1[CH:18]=[CH:17][C:15]([OH:16])=[CH:14][CH:13]=1)/[C:4]1[CH:10]=[CH:9][C:7]([OH:8])=[CH:6][CH:5]=1.O.[N+:22]([O-])([OH:24])=[O:23]>C(O)(=O)C>[OH:16][C:15]1[CH:14]=[CH:13][C:12]([C:11](=[C:3]([C:4]2[CH:10]=[CH:9][C:7]([OH:8])=[CH:6][CH:5]=2)[CH2:2][CH3:1])[CH2:19][CH3:20])=[CH:18][C:17]=1[N+:22]([O-:24])=[O:23]Participants
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 5 °C
Procedure
Under a nitrogen atmosphere, a suspension of diethylstilbestrol (1.0 g) in acetic acid (160 ml)-water (16 ml) was cooled to 5° C., and 70% nitric acid (0.34 g) was added dropwise thereto. Then, the resulting mixture was heated to 20° C. and stirred for 5 hours. The solvent was distilled off under reduced pressure and an aqueous sodium hydrogencarbonate solution was added to the residue, followed by two runs of extraction with ethyl acetate (150 ml). The combined organic layer was washed with water (200 ml), dried over anhydrous magnesium sulfate, and then concentrated under reduced pressure. The residue was purified by a silica gel column chromatography (n-hexane:ethyl acetate=9:1) to obtain 3-(4-hydroxy-3-nitrophenyl)-4-(4-hydroxyphenyl)-3-hexene (0.22 g, yield 19%).
Workup
- temperatureThen, the resulting mixture was heated to 20° C.
- distillationThe solvent was distilled off under reduced pressure
- additionan aqueous sodium hydrogencarbonate solution was added to the residue
- extractionfollowed by two runs of extraction with ethyl acetate (150 ml)
- washThe combined organic layer was washed with water (200 ml)
- dry with materialdried over anhydrous magnesium sulfate
- concentrationconcentrated under reduced pressure
- customThe residue was purified by a silica gel column chromatography (n-hexane:ethyl acetate=9:1)
Sources & evidence
- ORD record
- ord-afe2f8bf850846c5b7ccfd3b3da8209b
- Source dataset
- uspto-grants-1999_10
- Patent number
- US05962438
Reaction notes
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