Diisopropylethylamine → HCID 67385839, compound

HRID 245831Notes

Reaction equation

HRID 245831 reaction equation
[CH3:1][C:2]([O:5][C:6]([NH:8][C@@H:9]([C:13]([OH:15])=O)[CH:10]1[CH2:12][CH2:11]1)=[O:7])([CH3:4])[CH3:3].Cl.[NH:17]1[CH2:20][CH:19]([C:21]#[N:22])[CH2:18]1.C(N(CC)C(C)C)(C)C.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>CN(C=O)C>[C:2]([O:5][C:6](=[O:7])[NH:8][C@H:9]([CH:10]1[CH2:11][CH2:12]1)[C:13]([N:17]1[CH2:20][CH:19]([C:21]#[N:22])[CH2:18]1)=[O:15])([CH3:1])([CH3:3])[CH3:4]

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 7146275(R)-2-((tert-Butoxycarbonyl)amino)-2-cyclopropylacetic acidHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 45072465Azetidine-3-carbonitrile hydrochloride

Product 1

HCID 67385839HCID 67385839, compoundYield 59.3%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

In a round-bottomed flask Boc-D-cyclopropylglycine (500 mg, 2.32 mmol) and azetidine-3-carbonitrile hydrochloride (441 mg, 3.72 mmol) were dissolved in DMF (10 ml). N,N-Diisopropylethylamine (1.2 ml, 6.87 mmol) was added followed by HATU (972 mg, 2.56 mmol). The reaction mixture was stirred at room temperature overnight then quenched with water and extracted with diethyl ether (2×). The combined organic layers were washed twice with water and once with brine then dried over sodium sulfate, filtered and concentrated. The residue was triturated with petroleum ether to afford 384 mg (59%) of [(R)-2-(3-cyano-azetidin-1-yl)-1-cyclopropyl-2-oxo-ethyl]-carbamic acid tert-butyl ester as an off-white solid.

Workup

  1. customthen quenched with water
  2. extractionextracted with diethyl ether (2×)
  3. washThe combined organic layers were washed twice with water and once with brine
  4. dry with materialthen dried over sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe residue was triturated with petroleum ether

Sources & evidence

ORD record
ord-892effb9b79940a893f6b166fc8fd47c
Source dataset
uspto-grants-2014_02
Patent number
US08658646B2

Reaction notes

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