1-(2H-1-Benzopyran-3-yl)ethanone → 3-(1-Hydroxyethyl)-2H-Chromene
Reaction equation
C[C:2]1[CH:3]=[C:4]2[C:9](=[C:10](C)[CH:11]=1)[O:8][CH2:7][C:6]([C:13](=[O:15])[CH3:14])=[CH:5]2.C(C1COC2C(C=1)=CC=CC=2)(=O)C>>[OH:15][CH:13]([C:6]1[CH2:7][O:8][C:9]2[C:4]([CH:5]=1)=[CH:3][CH:2]=[CH:11][CH:10]=2)[CH3:14]Participants
3
Procedure
The procedure is as in Example 1, stage B, 6,8-dimethyl-3-acetyl-2H-chromene being replaced by 3-acetyl-2H-chromene, obtained in the preceding stage.
Workup
- customobtained in the preceding stage
Sources & evidence
- ORD record
- ord-9f91d14067ba4c5f8feb5dbbf3cf8505
- Source dataset
- uspto-grants-1990_12
- Patent number
- US04975454
Reaction notes
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