Tetrahydrofuran → HCID 86605290, compound

HRID 1348653Notes

Reaction equation

HRID 1348653 reaction equation
[CH2:1]([O:3][C:4](=[O:11])[C:5]([OH:10])([CH3:9])[C:6]([OH:8])=O)[CH3:2].O1CCCC1.[F:17][C:18]([F:22])([F:21])[CH2:19][NH2:20].Cl.CN(C)CCCN=C=NCC.C(N(CC)C(C)C)(C)C>>[CH2:1]([O:3][C:4](=[O:11])[C:5]([OH:10])([CH3:9])[C:6]([NH:20][CH2:19][C:18]([F:22])([F:21])[F:17])=[O:8])[CH3:2]

Participants

6

Reactant 5

HCID 8028TetrahydrofuranHCID 9773Ethanamine, 2,2,2-trifluoro-HCID 81531DiisopropylethylamineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 13396337Propanedioic acid, 2-hydroxy-2-methyl-, 1-ethyl ester

Product 1

HCID 86605290HCID 86605290, compoundYield 67%

Procedure

To a solution of 31.5 g (15.5 mmol) 2-hydroxy-2-methyl-malonic acid monoethyl ester in 400 ml of tetrahydrofuran 16.9 g (17.1 mmol) of 2,2,2-trifluoroethylamine, 32.7 g (17.1 mmol) of N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride, 23.1 g (17.1 mmol) of 1-hydroxybenzotrizole hydrate and 58.1 ml (34.2 mmol) of N,N-diisopropyl-ethylamine were added. The mixture was stirred at room temperature for 18 h. The solvent was removed by distillation and the residue was extracted with water/ethylacetate. Chromatography on silicagel with heptane/ethylacetate 1:1 yielded 25.4 g (67%) 2-hydroxy-2-methyl-N-(2,2,2-trifluoroethyl)-malonamic acid ethyl ester, MS m/e (%): 242.1 (M−H, 100).

Workup

  1. customThe solvent was removed by distillation
  2. extractionthe residue was extracted with water/ethylacetate

Sources & evidence

ORD record
ord-f50ae2de11b347d5a9155019f8e9b810
Source dataset
uspto-grants-2007_05
Patent number
US07211573B2

Reaction notes

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