Water → 3-(2-Carboxymethoxy-4-methoxyphenyl)-1-(3,4-methylenedioxyphenyl)-5-(prop-1-yloxy)indan-2-ylacetic acid

HRID 863161Notes

Reaction equation

HRID 863161 reaction equation
[C:1]([CH2:4][O:5][C:6]1[CH:11]=[C:10]([O:12][CH3:13])[CH:9]=[CH:8][C:7]=1[CH:14]1[C:22]2[C:17](=[CH:18][CH:19]=[C:20]([O:23][CH2:24][CH2:25][CH3:26])[CH:21]=2)[CH:16]([C:27]2[CH:32]=[CH:31][C:30]3[O:33][CH2:34][O:35][C:29]=3[CH:28]=2)[CH:15]1[CH2:36][C:37]#N)([OH:3])=[O:2].[OH-:39].[Na+].[OH2:41].COC1C=C(C2(C3C=CC4OCOC=4C=3)C3C(=CC(OCCC)=CC=3)C(C3C=CC(OC)=CC=3OCC(O)=O)C2C([O-])=O)C=C(OC)C=1>CO>[C:1]([CH2:4][O:5][C:6]1[CH:11]=[C:10]([O:12][CH3:13])[CH:9]=[CH:8][C:7]=1[CH:14]1[C:22]2[C:17](=[CH:18][CH:19]=[C:20]([O:23][CH2:24][CH2:25][CH3:26])[CH:21]=2)[CH:16]([C:27]2[CH:32]=[CH:31][C:30]3[O:33][CH2:34][O:35][C:29]=3[CH:28]=2)[CH:15]1[CH2:36][C:37]([OH:41])=[O:39])([OH:3])=[O:2]

Participants

6

Reactant 4

HCID 962WaterHCID 14798Sodium HydroxideHCID 867521303-(2-Carboxymethoxy-4-methoxyphenyl)-2-cyanomethyl-1-(3,4-methylenedioxyphenyl)-5-(prop-1-yloxy)indaneHCID 867521333,5-Dimethoxyphenyl-(1RS,2SR,3RS)-3-(2-carboxymethoxy-4-methoxyphenyl)-1-(3,4-methylenedioxyphenyl)-5-(prop-1-yloxy)-indane-2-carboxylate

Product 1

HCID 101663713-(2-Carboxymethoxy-4-methoxyphenyl)-1-(3,4-methylenedioxyphenyl)-5-(prop-1-yloxy)indan-2-ylacetic acidYield 90%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Conditions

Temperature
70 °C

Procedure

To a solution of 1RS,2RS,3RS)-3-(2-carboxymethoxy-4-methoxyphenyl)-2-cyanomethyl-1-(3,4-methylenedioxyphenyl)-5-(prop-1-yloxy)indane (290 mg, 0.56 mmol) in methanol (ca. 1 ml) was added aqueous 2N NaOH solution (0.3 ml) followed by H2O (8 ml) then (with caution) Na2O2 (120 mg). The mixture was heated to 70° C. and stirred for 20 h at which time HPLC showed only 15% hydrolysis. The mixture was stirred at 85° C. for 3 days with 3 (100 mg) portions of Na2O2 added each day the reaction mixture was partitioned between EtOAc and 3N HCl. The organic extract was washed with H2O then brine, dried (Na2SO4) and solvent removed in vacuo to afford the product as an oil (228 mg, 90% pure by HPLC) Final purification was obtained by crystallization as the bis cyclohexylamine salt.

Workup

  1. custom15% hydrolysis
  2. additionadded each day the reaction mixture
  3. customwas partitioned between EtOAc and 3N HCl
  4. extractionThe organic extract
  5. washwas washed with H2O
  6. dry with materialbrine, dried (Na2SO4) and solvent
  7. customremoved in vacuo

Sources & evidence

ORD record
ord-cbfcfb1cc71f461f84bcdcf0d512e6dc
Source dataset
uspto-grants-1998_02
Patent number
US05719183

Reaction notes

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