1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → HCID 16660816, compound

HRID 1362390Notes

Reaction equation

HRID 1362390 reaction equation
[CH3:1][NH:2][CH2:3][C:4]1[C:8]2[CH:9]=[CH:10][CH:11]=[CH:12][C:7]=2[O:6][C:5]=1[CH3:13].[O:14]=[C:15]1[CH2:20][O:19][C:18]2[CH:21]=[C:22]([CH:25]=[CH:26][C:27](O)=[O:28])[CH:23]=[N:24][C:17]=2[NH:16]1.ON1C2C=CC=CC=2N=N1.C(N(C(C)C)CC)(C)C.CN(C)CCCN=C=NCC>CN(C=O)C.O>[CH3:1][N:2]([CH2:3][C:4]1[C:8]2[CH:9]=[CH:10][CH:11]=[CH:12][C:7]=2[O:6][C:5]=1[CH3:13])[C:27](=[O:28])/[CH:26]=[CH:25]/[C:22]1[CH:23]=[N:24][C:17]2[NH:16][C:15](=[O:14])[CH2:20][O:19][C:18]=2[CH:21]=1

Participants

8

Reactant 5

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 66967084Methyl(2-methylbenzofuran-3-ylmethyl)amineHCID 669670993-(3-Oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazin-7-yl)-acrylic acid

Product 1

HCID 16660816HCID 16660816, compoundYield 42%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

To a solution of methyl-(2-methyl-benzofuran-3-ylmethyl)-amine (152 mg, 0.87 mmol) in DMF (5 mL) were added in sequential order 3-(3-Oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazin-7-yl)-acrylic acid (175 mg, 0.79 mmol), 1-hydroxybenzotriazole (121 mg, 0.87 mmol), diisopropylethylamine (412 uL, 2.37 mmol), and N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide (174 mg, 0.87 mmol). The mixture was stirred at room temperature overnight, cooled in an ice bath and treated with water under rapid stirring. The precipitated product was filtered and dried, triturated with diethyl ether to yield the title compound (125 mg, 42%) as a light brown solid and as a mixture of amide rotamers. 1H NMR (400 MHz, DMSO-d6) δ 11.46 (s, 1H), 8.21 (s, 1H), 7.89 (s, 1H), 7.50-7.59 (m, 3H), 7.19-7.26 (m, 3H), 4.74 (s, 2H), 4.70 (s, 2H), 3.06 (s, 3H), 2.52 (s, 3H); MS (ESI) m/e 378 (C21H19N3O4+H)+.

Workup

  1. temperaturecooled in an ice bath
  2. filtrationThe precipitated product was filtered
  3. customdried
  4. customtriturated with diethyl ether

Sources & evidence

ORD record
ord-dd99c9b4b70242f29aedf97c8d4f7212
Source dataset
uspto-grants-2011_02
Patent number
US07879872B2

Reaction notes

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