1-Hydroxybenzotriazole → 1-[3-(Tert-butyldiphenylsilyloxymethyl)-2,4-dichlorophenyl]-2-[4-(methylcarbamoyl)cinnamoylaminomethyl]pyrrole

HRID 1871109Notes

Reaction equation

HRID 1871109 reaction equation
[NH2:1][CH2:2][C:3]1[N:4]([C:8]2[CH:13]=[CH:12][C:11]([Cl:14])=[C:10]([CH2:15][O:16][Si:17]([C:30]([CH3:33])([CH3:32])[CH3:31])([C:24]3[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=3)[C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=3)[C:9]=2[Cl:34])[CH:5]=[CH:6][CH:7]=1.[CH3:35][NH:36][C:37]([C:39]1[CH:49]=[CH:48][C:42]([CH:43]=[CH:44][C:45](O)=[O:46])=[CH:41][CH:40]=1)=[O:38].Cl.C(N=C=NCCCN(C)C)C.ON1C2C=CC=CC=2N=N1>CN(C)C=O>[Si:17]([O:16][CH2:15][C:10]1[C:9]([Cl:34])=[C:8]([N:4]2[CH:5]=[CH:6][CH:7]=[C:3]2[CH2:2][NH:1][C:45](=[O:46])[CH:44]=[CH:43][C:42]2[CH:48]=[CH:49][C:39]([C:37](=[O:38])[NH:36][CH3:35])=[CH:40][CH:41]=2)[CH:13]=[CH:12][C:11]=1[Cl:14])([C:30]([CH3:31])([CH3:33])[CH3:32])([C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1)[C:24]1[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=1

Participants

6

Reactant 4

HCID 757711-HydroxybenzotriazoleHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 183217752-Aminomethyl-1-(3-tert-butyldiphenylsilyloxymethyl-2,4-dichlorophenyl)pyrroleHCID 534120223-[4-(Methylcarbamoyl)phenyl]prop-2-enoic acid

Product 1

HCID 542764421-[3-(Tert-butyldiphenylsilyloxymethyl)-2,4-dichlorophenyl]-2-[4-(methylcarbamoyl)cinnamoylaminomethyl]pyrroleYield 97.8%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 2-aminomethyl-1-[3-(tert-butyldiphenylsilyloxymethyl)-2,4-dichlorophenyl]pyrrole (465 mg) in anhydrous dimethylformamide (7 ml) were added 4-(methylcarbamoyl)cinnamic acid (206 mg), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (219 mg) and 1-hydroxybenzotriazole (185 mg). The mixture was stirred at ambient temperature for 3 hours and partitioned between ethyl acetate and water. The organic layer was isolated and the aqueous layer was extracted with ethyl acetate. The organic layers were combined, washed with saturated aqueous sodium hydrogen carbonate and brine, dried over magnesium sulfate and evaporated in vacuo. The residue was triturated with diisopropyl ether to give 1-[3-(tert-butyldiphenylsilyloxymethyl)-2,4-dichlorophenyl]-2-[4-(methylcarbamoyl)cinnamoylaminomethyl]pyrrole (622 mg) as a brownish powder.

Workup

  1. custompartitioned between ethyl acetate and water
  2. customThe organic layer was isolated
  3. extractionthe aqueous layer was extracted with ethyl acetate
  4. washwashed with saturated aqueous sodium hydrogen carbonate and brine
  5. dry with materialdried over magnesium sulfate
  6. customevaporated in vacuo
  7. customThe residue was triturated with diisopropyl ether

Sources & evidence

ORD record
ord-70d454538b784b30894922c2df386feb
Source dataset
uspto-grants-2000_08
Patent number
US06100284

Reaction notes

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