Diphenylacetic Acid → HCID 21468084, compound

HRID 1939729Notes

Reaction equation

HRID 1939729 reaction equation
[CH3:1][C:2]([CH3:21])=[CH:3][CH2:4][C@@H:5]([OH:20])[C:6]1[C:16](=[O:17])[C:15]2[C:14]([OH:18])=[CH:13][CH:12]=[C:11]([OH:19])[C:10]=2[C:8](=[O:9])[CH:7]=1.C1(N=C=NC2CCCCC2)CCCCC1.[C:37]1([CH:43]([C:47]2[CH:52]=[CH:51][CH:50]=[CH:49][CH:48]=2)[C:44](O)=[O:45])[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=1>CN(C)C1C=CN=CC=1.ClCCl>[C:47]1([CH:43]([C:37]2[CH:38]=[CH:39][CH:40]=[CH:41][CH:42]=2)[C:44]([O:20][CH:5]([C:6]2[C:16](=[O:17])[C:15]3[C:10]([C:8](=[O:9])[CH:7]=2)=[C:11]([OH:19])[CH:12]=[CH:13][C:14]=3[OH:18])[CH2:4][CH:3]=[C:2]([CH3:21])[CH3:1])=[O:45])[CH:48]=[CH:49][CH:50]=[CH:51][CH:52]=1

Participants

6

Reactant 3

HCID 8333Diphenylacetic AcidHCID 10868DicyclohexylcarbodiimideHCID 479503Shikonin

Product 1

HCID 21468084HCID 21468084, compoundYield 59%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent

Procedure

288 mg (1 mmole) of shikonin, 226 mg (1.1 mmole) of dicyclohexylcarbodiimide and 30 mg (0.25 mmole) of 4-dimethylaminopyridine were dissolved in 3 ml of dry dichloromethane. To the resulting solution was added 212 mg (1 mmole) of diphenylacetic acid at 0° C. under nitrogen gas, and the mixture was stirred for 30 minutes and then at room temperature for further 3 hours. The resulting product was separated and purified according to the procedures as described in Example 1 to obtain 270 mg (Yield: 59%) of the title compound having the following structure as a red precipitate.

Workup

  1. waitat room temperature for further 3 hours
  2. customThe resulting product was separated
  3. custompurified

Sources & evidence

ORD record
ord-9b960bbb15744e25bb415dfa469204d8
Source dataset
uspto-grants-1997_12
Patent number
US05696276

Reaction notes

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