Diisopropylethylamine → 4-[(S)-2-tert-Butoxycarbonylamino-4-(2H-tetrazol-5-yl)-butyryl]-piperazine-1-carboxylic acid butyl ester

HRID 1185522Notes

Reaction equation

HRID 1185522 reaction equation
[C:1]([O:5][C:6]([NH:8][C@@H:9]([CH2:13][CH2:14][C:15]1[N:16]=[N:17][NH:18][N:19]=1)[C:10]([OH:12])=O)=[O:7])([CH3:4])([CH3:3])[CH3:2].CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.CCN(C(C)C)C(C)C.[CH2:53]([O:57][C:58]([N:60]1[CH2:65][CH2:64][NH:63][CH2:62][CH2:61]1)=[O:59])[CH2:54][CH2:55][CH3:56]>CN(C=O)C.C(Cl)Cl>[CH2:53]([O:57][C:58]([N:60]1[CH2:65][CH2:64][N:63]([C:10](=[O:12])[C@@H:9]([NH:8][C:6]([O:5][C:1]([CH3:2])([CH3:3])[CH3:4])=[O:7])[CH2:13][CH2:14][C:15]2[N:16]=[N:17][NH:18][N:19]=2)[CH2:62][CH2:61]1)=[O:59])[CH2:54][CH2:55][CH3:56]

Participants

7

Reactant 4

HCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 21963126Butyl piperazine-1-carboxylateHCID 66855300(2S)-2-{[(tert-butoxy)carbonyl]amino}-4-(1H-1,2,3,4-tetrazol-5-yl)butanoic acid

Product 1

HCID 668550864-[(S)-2-tert-Butoxycarbonylamino-4-(2H-tetrazol-5-yl)-butyryl]-piperazine-1-carboxylic acid butyl ester

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 6344DichloromethaneSolvent

Procedure

To a solution of 500 mg (S)-2-tert-butoxycarbonylamino-4-(2H-tetrazol-5-yl)-butyric acid in 20 ml DMF were added 701 mg HATU, 457 μl DIPEA and 343 mg 1-butoxycarbonyl-piperazine. After 3 h the solution was concentrated, the residue obtained diluted with DCM and subsequently washed with aqueous LiCl (4%) and 0.1 M HCl. The organic layer was dried over MgSO4 and concentrated. Yield: 730 mg.

Workup

  1. concentrationAfter 3 h the solution was concentrated
  2. customthe residue obtained
  3. washsubsequently washed with aqueous LiCl (4%) and 0.1 M HCl
  4. dry with materialThe organic layer was dried over MgSO4
  5. concentrationconcentrated

Sources & evidence

ORD record
ord-c5a220fd6418426ea84b175732e4fbe5
Source dataset
uspto-grants-2014_03
Patent number
US08669266B2

Reaction notes

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