Diisopropylethylamine → HCID 86701431, compound

HRID 537523Notes

Reaction equation

HRID 537523 reaction equation
[OH:1][C@@H:2]([C:6]1[CH:14]=[CH:13][C:9]([C:10]([OH:12])=O)=[CH:8][CH:7]=1)[CH2:3][CH2:4][CH3:5].Cl.[NH2:16][CH2:17][CH2:18][C:19]([O:21][CH2:22][CH3:23])=[O:20].F[P-](F)(F)(F)(F)F.N1(OC(N(C)C)=[N+](C)C)C2N=CC=CC=2N=N1.C(N(C(C)C)CC)(C)C>CN(C)C=O>[OH:1][C@@H:2]([C:6]1[CH:7]=[CH:8][C:9]([C:10]([NH:16][CH:17]=[CH:18][C:19]([O:21][CH2:22][CH3:23])=[O:20])=[O:12])=[CH:13][CH:14]=1)[CH2:3][CH2:4][CH3:5]

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 458475beta-Alanine, ethyl ester, hydrochlorideHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 68157618HCID 68157618, compound

Product 1

HCID 86701431HCID 86701431, compoundYield 100.9%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

N,N-dimethylformamide (16.9 mL) was added to a vial containing (R)-4-(1-hydroxybutyl)benzoic acid (2.6 g, 13.5 mmol), ethyl 3-aminopropanoate hydrochloride (4.16 g, 27.1 mmol) and O-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (10.3 g, 27.1 mmol). Diisopropylethylamine (11.8 mL, 67.7 mmol) was then added. The reaction was stirred for 1 h, and was then concentrated. Purification by column chromatography (0-50% ethyl acetate in heptane) afforded (R)-ethyl 3-(4-(1-hydroxybutyl)benzamido)propenoate (3.97 g, 100% yield) as an oil. 1H NMR (400 MHz, CDCl3, δ): 7.75 (d, J=8.2 Hz, 2H), 7.40 (d, J=8.0 Hz, 2H), 6.83 (br. s., 1H), 4.74 (t, J=8.2 Hz, 1H), 4.18 (q, J=7.1 Hz, 2H), 3.73 (q, J=5.9 Hz, 2H), 2.64 (t, J=6.4 Hz, 2H), 1.87 (br. s., 1H), 1.84-1.62 (m, 2H), 1.49-1.30 (m, 2H), 1.28 (t, J=107.1 Hz, 3H), 0.93 (t, J=7.3 Hz, 3H). MS (M+1): 294.

Workup

  1. concentrationwas then concentrated
  2. customPurification by column chromatography (0-50% ethyl acetate in heptane)

Sources & evidence

ORD record
ord-0012960913e7427c8ce07435fcf1442a
Source dataset
uspto-grants-2014_10
Patent number
US08859591B2

Reaction notes

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