Triethylamine → HCID 178501404, compound

HRID 986362Notes

Reaction equation

HRID 986362 reaction equation
[C:1]1([CH2:11][CH:12]([CH2:16][C:17]([N:19]2[CH2:24][CH2:23][O:22][CH2:21][CH2:20]2)=[O:18])[C:13](O)=[O:14])[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[CH:3][CH:2]=1.Cl.Cl.[CH3:27][O:28][C:29](=[O:38])[C@H:30]([CH2:32][C:33]1[N:37]=[CH:36][NH:35][CH:34]=1)[NH2:31].C1(P(N=[N+]=[N-])(C2C=CC=CC=2)=O)C=CC=CC=1.C(N(CC)CC)C>CN(C)C=O>[CH3:27][O:28][C:29](=[O:38])[C@H:30]([CH2:32][C:33]1[N:37]=[CH:36][NH:35][CH:34]=1)[NH:31][C:13](=[O:14])[CH:12]([CH2:11][C:1]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[CH:3][CH:2]=1)[CH2:16][C:17]([N:19]1[CH2:24][CH2:23][O:22][CH2:21][CH2:20]1)=[O:18]

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 199401P,P-Diphenylphosphinic azideHCID 139139432-(1-Naphthylmethyl)-3-morpholinocarbonylpropionic acidHCID 178419105HCID 178419105, compound

Product 1

HCID 178501404HCID 178501404, compoundYield 19.2%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a suspension of 0.89 g of 2-(1-naphthylmethyl)3-(morpholinocarbonyl)propionic acid and 0.79 g of L-histidine methyl ester dihydrochloride in 23 ml of N,N-dimethylformamide were added 0.70 ml of diphenylphosphoryl azide and 1.50 ml of triethylamine with stirring under ice-cooling, and then the mixture was additionaly stirred for 16 hours. The reaction mixture was evaporated under reduced pressure, and to the residue was added a 5% aqueous sodium bicarbonate solution. The mixture was extracted with ethyl acetate, and the ethyl acetate layer was washed with water, dried over anhydrous magnesium sulfate, and evaporated under reduced pressure. The residue was purified by silica gel column chromatography (eluent: chloroform/methanol=20/1, by volume) to obtain 0.25 g of N-[2-(1-Naphthylmethyl)-3-(morpholinocarbonyl)propionyl]-L-histidine methyl ester having an Rf2 value of 0.56 as a white powder.

Workup

  1. temperaturecooling
  2. stirringthe mixture was additionaly stirred for 16 hours
  3. customThe reaction mixture was evaporated under reduced pressure
  4. additionto the residue was added a 5% aqueous sodium bicarbonate solution
  5. extractionThe mixture was extracted with ethyl acetate
  6. washthe ethyl acetate layer was washed with water
  7. dry with materialdried over anhydrous magnesium sulfate
  8. customevaporated under reduced pressure
  9. customThe residue was purified by silica gel column chromatography (eluent: chloroform/methanol=20/1, by volume)

Sources & evidence

ORD record
ord-4eed5d2a97ed4356a0505cc7f39fbbc7
Source dataset
uspto-grants-1987_12
Patent number
US04711958

Reaction notes

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