Water → 2-Acetamidomethyl-1-(3-tert-butyldiphenylsilyloxymethyl-2,4-dichlorophenyl)pyrrole

HRID 850195Notes

Reaction equation

HRID 850195 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.N1C=CC=CC=1.[C:41](OC(=O)C)(=[O:43])[CH3:42].O>ClCCl>[C:41]([NH: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]([CH3:31])([CH3:33])[CH3:32])([C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=3)[C:24]3[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=3)[C:9]=2[Cl:34])[CH:5]=[CH:6][CH:7]=1)(=[O:43])[CH3:42]

Participants

6

Reactant 4

HCID 962WaterHCID 1049PyridineHCID 7918Acetic AnhydrideHCID 183217752-Aminomethyl-1-(3-tert-butyldiphenylsilyloxymethyl-2,4-dichlorophenyl)pyrrole

Product 1

HCID 183219642-Acetamidomethyl-1-(3-tert-butyldiphenylsilyloxymethyl-2,4-dichlorophenyl)pyrroleYield 99.8%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a mixture of 2-aminomethyl-1-(3-tert-butyldiphenylsilyloxymethyl-2,4-dichlorophenyl)pyrrole (87 mg) and pyridine (20.3 mg) in dichloromethane (1 ml) was added acetic anhydride (20.9 mg) under ice-cooling, and the mixture was stirred for 3 hours at ambient temperature. The mixture was poured into water and extracted with dichloromethane. The organic layer was washed with 1H hydrochloric acid, water, saturated sodium bicarbonate solution and brine, dried over magnesium sulfate and evaporated in vacuo to give 2-acetamidomethyl-1-(3-tert-butyldiphenylsilyloxymethyl-2,4-dichlorophenyl)pyrrole (94 mg) as amorphous powder.

Workup

  1. temperaturecooling
  2. extractionextracted with dichloromethane
  3. washThe organic layer was washed with 1H hydrochloric acid, water, saturated sodium bicarbonate solution and brine
  4. dry with materialdried over magnesium sulfate
  5. customevaporated in vacuo

Sources & evidence

ORD record
ord-6d3c9d57f0a54171a5c090c9cd741781
Source dataset
uspto-grants-2000_01
Patent number
US06015818

Reaction notes

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