Iodoacetic Acid → [(5,6-Dichloro-9a-ethyl-3-oxo-1,2,9,9a-tetrahydro-3H-fluoren-7-yl)oxy]acetic acid

HRID 1447220Notes

Reaction equation

[Cl:1][C:2]1[C:14]([Cl:15])=[C:13]([OH:16])[CH:12]=[C:11]2[C:3]=1[C:4]1[C:9]([CH2:17][CH3:18])([CH2:10]2)[CH2:8][CH2:7][C:6](=[O:19])[CH:5]=1.C(=O)([O-])[O-].[K+].[K+].CN(C)C=O.I[CH2:32][C:33]([OH:35])=[O:34]>O>[Cl:1][C:2]1[C:14]([Cl:15])=[C:13]([O:16][CH2:32][C:33]([OH:35])=[O:34])[CH:12]=[C:11]2[C:3]=1[C:4]1[C:9]([CH2:17][CH3:18])([CH2:10]2)[CH2:8][CH2:7][C:6](=[O:19])[CH:5]=1

Participants

Conditions

Temperature: 50 °C

Procedure

5,6-Dichloro-9a-ethyl-7-hydroxy-1,2,9,9a-tetrahydro-3H-fluoren-3-one (Example 1, Step C) (15 gm., 0.048 mole), potassium carbonate (13.3 gm., 0.096 mole), dimethylformamide (100 ml.) and iodoacetic acid (10.6 gm., 0.057 mole) is stirred at room temperature for 24 hours. The reaction mixture is poured into water (150 ml.), stirred, warmed to 50° C., filtered and the filtrate acidified with 6 N hydrochloric acid to obtain [(5,6-dichloro-9a-ethyl-3-oxo-1,2,9,9a-tetrahydro-3H-fluoren-7-yl)oxy]acetic acid, which after recrystallization from acetic acid, melts at 237° C.-238° C.

Workup

filtrationfiltered

Sources & evidence

ORD record: ord-f5b80af9dbb54b8fa85d82db0b9457cf
Source dataset: uspto-grants-1982_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04316043

Reaction notes

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