Propylamine → HCID 69517505, compound

HRID 855073Notes

Reaction equation

HRID 855073 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][C:11]=1F)[O:8][CH:7]([C:13]([F:16])([F:15])[F:14])[C:6]([C:17]([O:19][CH2:20][CH3:21])=[O:18])=[CH:5]2.[CH2:22]([NH2:25])[CH2:23][CH3:24].C([O-])([O-])=O.[K+].[K+]>CN(C=O)C>[Cl:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][C:11]=1[NH:25][CH2:22][CH2:23][CH3:24])[O:8][CH:7]([C:13]([F:16])([F:15])[F:14])[C:6]([C:17]([O:19][CH2:20][CH3:21])=[O:18])=[CH:5]2

Participants

5

Reactant 3

HCID 7852PropylamineHCID 11430Potassium CarbonateHCID 21883602ethyl 6-chloro-7-fluoro-2-(trifluoromethyl)-2H-chromene-3-carboxylate

Product 1

HCID 69517505HCID 69517505, compoundYield 79%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
90 °C

Procedure

A mixture of ethyl 6-chloro-7-fluoro-2-(trifluoromethyl)-2H-chromene-3-carboxylate (Example 7a, Step 2) (0.5 g, 1.54 mmole) and propylamine (0.13 mL, 1.54 mmole) was dissolved in anhydrous DMF (5 mL), which was warmed to 90° C. and treated with K2CO3 (0.25 g, 1.84 mmole). The mixture was maintained at 90° C. for 24 hrs, cooled to room temperature, filtered through celite and condensed to a viscous oil. The oil was purified by flash chromatography (silica gel) with 40% methylene chloride in hexane to give a light yellow oil (0.44 g, 79%): GCMS m/z 363.00 (M+). 1H NMR (CDCl3/400 MHz) 7.57 (s, 1H), 7.08 (s, 1H), 6.23 (s, 1H), 5.63 (q, 1H, J=7.0 Hz), 4.73 (brs, 1H), 4.26 (m, 2H), 3.14 (m, 2H), 1.66 (m, 2H), 1.31 (m, 3H), 1.01 (m, 3H).

Workup

  1. temperatureThe mixture was maintained at 90° C. for 24 hrs
  2. temperaturecooled to room temperature
  3. filtrationfiltered through celite and condensed to a viscous oil
  4. customThe oil was purified by flash chromatography (silica gel) with 40% methylene chloride in hexane

Sources & evidence

ORD record
ord-b86c9a18eefc4b13a83063d9b40af7d9
Source dataset
uspto-grants-2007_08
Patent number
US07259266B2

Reaction notes

Loading…