Dimethylformamide → HCID 14372042, compound

HRID 1381868Notes

Reaction equation

HRID 1381868 reaction equation
Br.Br[CH2:3][CH2:4][C:5]1[C:10](=[O:11])[N:9]2[C:12]([CH3:15])=[CH:13][S:14][C:8]2=[N:7][C:6]=1[CH3:16].[F:17][C:18]1[CH:32]=[CH:31][C:21]2[C:22]([CH:25]3[CH2:30][CH2:29][NH:28][CH2:27][CH2:26]3)=[N:23][O:24][C:20]=2[CH:19]=1.C(=O)([O-])[O-].[Na+].[Na+].CN(C)C=O>O>[F:17][C:18]1[CH:32]=[CH:31][C:21]2[C:22]([CH:25]3[CH2:26][CH2:27][N:28]([CH2:3][CH2:4][C:5]4[C:10](=[O:11])[N:9]5[C:12]([CH3:15])=[CH:13][S:14][C:8]5=[N:7][C:6]=4[CH3:16])[CH2:29][CH2:30]3)=[N:23][O:24][C:20]=2[CH:19]=1

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 10340Sodium CarbonateHCID 8494213-(4-Piperidyl)-6-fluoro-1,2-benzisoxazoleHCID 139830776-(2-Bromoethyl)-3,7-dimethyl-5H-thiazolo[3,2-A]pyrimidin-5-one monohydrobromide

Product 1

HCID 14372042HCID 14372042, compoundYield 62%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A mixture of 7.4 parts of 6-(2-bromoethyl)-3,7-dimethyl-5H-thiazolo[3,2-a]pyrimidin-5-one monohydrobromide, 4.4 parts of 6-fluoro-3-(4-piperidinyl)-1,2-benzisoxazole, 10 parts of sodium carbonate and 90 parts of N,N-dimethylformamide was stirred overnight at 80°-85° C. After cooling, the reaction mixture was poured into water. The product was filtered off and purified by column chromatography over silica gel using a mixture of trichloromethane and methanol (95:5 by volume) as eluent. The pure fractions were collected and the eluent was evaporated. 2-Propanol was added to the residue. The product was filtered off and dried, yielding 5.3 parts (62%) of 6-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-3,7-dimethyl-5H-thiazolo[3,2-a]pyrimidin-5-one; mp. 231.0° C. (compound 13).

Workup

  1. temperatureAfter cooling
  2. filtrationThe product was filtered off
  3. custompurified by column chromatography over silica gel using
  4. additiona mixture of trichloromethane and methanol (95:5 by volume) as eluent
  5. customThe pure fractions were collected
  6. customthe eluent was evaporated
  7. addition2-Propanol was added to the residue
  8. filtrationThe product was filtered off
  9. customdried

Sources & evidence

ORD record
ord-17b8aa8902db450db738a08b61d2b6de
Source dataset
uspto-grants-1989_02
Patent number
US04804663

Reaction notes

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