Ethanolamine → HCID 67366053, compound

HRID 217940Notes

Reaction equation

HRID 217940 reaction equation
C(N1C=CN=C1)(N1C=CN=C1)=O.[C:13]([O:17][C:18]([NH:20][CH2:21][CH2:22][CH2:23][CH2:24][C:25]1[CH:33]=[CH:32][C:28]([C:29]([OH:31])=O)=[CH:27][CH:26]=1)=[O:19])([CH3:16])([CH3:15])[CH3:14].[CH2:34]([CH2:36][NH2:37])[OH:35]>C1COCC1>[C:13]([O:17][C:18](=[O:19])[NH:20][CH2:21][CH2:22][CH2:23][CH2:24][C:25]1[CH:26]=[CH:27][C:28]([C:29](=[O:31])[NH:37][CH2:36][CH2:34][OH:35])=[CH:32][CH:33]=1)([CH3:14])([CH3:15])[CH3:16]

Participants

5

Reactant 3

HCID 700EthanolamineHCID 682631,1'-CarbonyldiimidazoleHCID 67365596HCID 67365596, compound

Product 1

HCID 67366053HCID 67366053, compoundYield 71.2%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

1,1′-Carbonyldiimidazole (0.6 g, 3.71 mmol) was added into the solution of 26 (0.91 g, 3.09 mmol) in THF (50 mL). The reaction mixture was stirred at room temperature overnight under argon atmosphere, then ethanolamine (0.28 mL, 4.64 mmol) was added. The stirring was continued for 24 h at room temperature and argon atmosphere. The solvent was evaporated and the residue was purified by Flash™ (BIOTAGE, Inc) (90 g silica gel cartridge 40M, 18:1:0.1 chloroform/ethanol/concentrated ammonium hydroxide). 0.74 g (71%) of a white solid 27 was isolated. 1H NMR (300 MHz, CDCl3) δ 1.40 (s, 9H), 1.48 (m, 2H), 1.60 (m, 2H), 2.62 (m, 2H), 3.10 (m, 2H), 3.79 (m, 2H), 4.55 (br s, 1H), 6.74 (m, 1H), 7.18 (d, 2H), 7.66 (d, 2H).

Workup

  1. waitThe stirring was continued for 24 h at room temperature
  2. customThe solvent was evaporated
  3. customthe residue was purified by Flash™ (BIOTAGE, Inc) (90 g silica gel cartridge 40M, 18:1:0.1 chloroform/ethanol/concentrated ammonium hydroxide)

Sources & evidence

ORD record
ord-db32e5caa01c4158a6c6ba6155e3b01e
Source dataset
uspto-grants-2012_06
Patent number
US08198286B2

Reaction notes

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