Triethylamine → N-[(5-amino-1-methyl-1H-pyrazol-4-yl)methyl]-N',N''-bis(tert-butoxycarbonyl)-N-[2-(tritylamino)ethyl]guanidine

HRID 459652

Reaction equation

HRID 459652 reaction equation
[NH2:1][C:2]1[N:6]([CH3:7])[N:5]=[CH:4][C:3]=1[CH2:8][NH:9][CH2:10][CH2:11][NH:12][C:13]([C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1)([C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1)[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1.C(N(CC)CC)C.FC(F)(F)S(N=[C:45]([NH:54][C:55](=[O:61])[O:56][C:57]([CH3:60])([CH3:59])[CH3:58])[NH:46][C:47](=[O:53])[O:48][C:49]([CH3:52])([CH3:51])[CH3:50])(=O)=O>C(Cl)(Cl)Cl>[NH2:1][C:2]1[N:6]([CH3:7])[N:5]=[CH:4][C:3]=1[CH2:8][N:9]([CH2:10][CH2:11][NH:12][C:13]([C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1)([C:20]1[CH:21]=[CH:22][CH:23]=[CH:24][CH:25]=1)[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1)[C:45]([NH:46][C:47]([O:48][C:49]([CH3:52])([CH3:51])[CH3:50])=[O:53])=[N:54][C:55]([O:56][C:57]([CH3:60])([CH3:59])[CH3:58])=[O:61]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 36945701,3-Di-Boc-2-(trifluoromethylsulfonyl)guanidineHCID 18442411N-[(5-amino-1-methyl-1H-pyrazol-4-yl)methyl]-N'-tritylethane-1,2-diamine

Product 1

HCID 68519459N-[(5-amino-1-methyl-1H-pyrazol-4-yl)methyl]-N',N''-bis(tert-butoxycarbonyl)-N-[2-(tritylamino)ethyl]guanidineYield 25.2%

Reagents, catalysts & solvents 1

HCID 6212ChloroformSolvent

Procedure

To a solution of N-[(5-amino-1-methyl-1H-pyrazol-4-yl)methyl]-N′-tritylethane-1,2-diamine (7.50 g) and triethylamine (2.86 g) in chloroform (100 ml) was added di-tert-butyl ({[(trifluoromethyl)sulfonyl]imino}-methylene)biscarbamate (11.05 g). The mixture was stirred at room temperature for 4 days. The reaction mixture was washed successively with 10% aqueous citric acid solution and brine, and 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 N-[(5-amino-1-methyl-1H-pyrazol-4-yl)methyl]-N′,N″-bis(tert-butoxycarbonyl)-N-[2-(tritylamino)ethyl]guanidine (3.00 g) as a solid.

Workup

  1. washThe reaction mixture was washed successively with 10% aqueous citric acid solution and brine
  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-25b47db223204645b643fcf71cdc9cd0
Source dataset
uspto-grants-2007_03
Patent number
US07192943B2

Linked notes

Loading…