Retusin → HCID 356357, compound

HRID 1194467Notes

Reaction equation

HRID 1194467 reaction equation
[OH:1][C:2]1[CH:20]=[CH:19][C:5]2[C:6](=O)[C:7]([C:10]3[CH:15]=[CH:14][C:13]([O:16]C)=[CH:12][CH:11]=3)=[CH:8][O:9][C:4]=2[C:3]=1[OH:21]>O>[OH:1][C:2]1[CH:20]=[CH:19][C:5]2[CH2:6][CH:7]([C:10]3[CH:15]=[CH:14][C:13]([OH:16])=[CH:12][CH:11]=3)[CH2:8][O:9][C:4]=2[C:3]=1[OH:21]

Participants

3

Reactant 1

HCID 5481240Retusin

Product 1

HCID 356357HCID 356357, compound

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

As example 26, but using 7,8-dihydroxy-3-(4-hydroxyphenyl)-4H-1-benzopyran-4-one [J. Sci. Ind. Research (India) 20B, 334 (1961)] (540 mg) instead of 7-hydroxy-8-methyl-3-(4-methylphenyl)-4H-1-benzopyran-4-one. A crystalline precipitate is formed when water is added; it is filtrated off and washed with water. 3,4-Dihydro-7,8-dihydroxy-3-(4-hydroxyphenyl)-2H-1-benzopyran is obtained; m.p. 225°-226°.

Workup

  1. additionis added
  2. filtrationit is filtrated off
  3. washwashed with water

Sources & evidence

ORD record
ord-90b54ca629f8457791faa6daf5dc2dd8
Source dataset
uspto-grants-1989_03
Patent number
US04814346

Reaction notes

Loading…