Trityl chloride → HCID 86597904, compound

HRID 459649Notes

Reaction equation

HRID 459649 reaction equation
[NH2:1][C:2]1[N:6]([CH3:7])[N:5]=[CH:4][C:3]=1[NH:8][C:9]([C@@H:11]([NH:24][C:25](=[O:31])[O:26][C:27]([CH3:30])([CH3:29])[CH3:28])[CH2:12][CH2:13][CH2:14][CH2:15][NH:16][C:17](=[O:23])[O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:10].C(N(CC)CC)C.[C:39]1([C:45](Cl)([C:52]2[CH:57]=[CH:56][CH:55]=[CH:54][CH:53]=2)[C:46]2[CH:51]=[CH:50][CH:49]=[CH:48][CH:47]=2)[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=1>C(Cl)(Cl)Cl>[CH3:7][N:6]1[C:2]([NH:1][C:45]([C:39]2[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=2)([C:52]2[CH:53]=[CH:54][CH:55]=[CH:56][CH:57]=2)[C:46]2[CH:47]=[CH:48][CH:49]=[CH:50][CH:51]=2)=[C:3]([NH:8][C:9]([C@@H:11]([NH:24][C:25](=[O:31])[O:26][C:27]([CH3:30])([CH3:29])[CH3:28])[CH2:12][CH2:13][CH2:14][CH2:15][NH:16][C:17](=[O:23])[O:18][C:19]([CH3:21])([CH3:22])[CH3:20])=[O:10])[CH:4]=[N:5]1

Participants

5

Reactant 3

HCID 6456Trityl chlorideHCID 8471TriethylamineHCID 86597903HCID 86597903, compound

Product 1

HCID 86597904HCID 86597904, compound

Reagents, catalysts & solvents 1

HCID 6212ChloroformSolvent

Procedure

To a solution of the crude product of di-tert-butyl (1S)-{1-[(5-amino-1-methyl-1H-pyrazol-4-yl)carbamoyl]pentamethylene}biscarbamate and triethylamine (0.91 g) in chloroform (30 ml) was added triphenylmethyl chloride (2.51 g), and the mixture was stirred at room temperature for 6 hours. The reaction mixture was washed successively with 0.10% aqueous citric acid solution, brine and saturated aqueous sodium hydrogencarbonate solution. The organic layer was dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo. The residue was purified by column chromatography on silica gel eluting with 3% methanol/chloroform to give di-tert-butyl (1S)-(1-{[1-methyl-5-(tritylamino)-1H-pyrazol-4-yl]carbamoyl}pentamethylene)biscarbamate (4.23 g) as an oil.

Workup

  1. washThe reaction mixture was washed successively with 0.10% aqueous citric acid solution, brine and saturated aqueous sodium hydrogencarbonate solution
  2. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. customThe residue was purified by column chromatography on silica gel eluting with 3% methanol/chloroform

Sources & evidence

ORD record
ord-f223c81a918f41188bc064a712f0719f
Source dataset
uspto-grants-2007_03
Patent number
US07192943B2

Reaction notes

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