Dimethylamine → N-(3-chloro-4-fluorophenyl)-7-[(2E)-4-(dimethylamino)but-2-enoyl]-5,6,7,8-tetrahydropyrido[4',3':4,5]thieno[2,3-d]pyrimidin-4-amine

HRID 1887414Notes

Reaction equation

HRID 1887414 reaction equation
Br[CH2:2][CH:3]=[CH:4][C:5]([N:7]1[CH2:19][C:18]2[S:17][C:16]3[N:15]=[CH:14][N:13]=[C:12]([NH:20][C:21]4[CH:26]=[CH:25][C:24]([F:27])=[C:23]([Cl:28])[CH:22]=4)[C:11]=3[C:10]=2[CH2:9][CH2:8]1)=[O:6].[CH3:29][NH:30][CH3:31].CO.ClCCl>ClCCl>[Cl:28][C:23]1[CH:22]=[C:21]([NH:20][C:12]2[C:11]3[C:10]4[CH2:9][CH2:8][N:7]([C:5](=[O:6])/[CH:4]=[CH:3]/[CH2:2][N:30]([CH3:31])[CH3:29])[CH2:19][C:18]=4[S:17][C:16]=3[N:15]=[CH:14][N:13]=2)[CH:26]=[CH:25][C:24]=1[F:27]

Participants

5

Reactant 3

HCID 674DimethylamineHCID 21226129Dichloromethane methanolHCID 668497424-Bromo-1-[4-(3-chloro-4-fluoro-phenylamino)-5,8-dihydro-6H-9-thia-1,3,7-triaza-fluoren-7-yl]-but-2-en-1-one

Product 1

HCID 24748563N-(3-chloro-4-fluorophenyl)-7-[(2E)-4-(dimethylamino)but-2-enoyl]-5,6,7,8-tetrahydropyrido[4',3':4,5]thieno[2,3-d]pyrimidin-4-amineYield 25.9%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To an ice-bathed cooled solution of 4-Bromo-1-[4-(3-chloro-4-fluoro-phenylamino)-5,8-dihydro-6H-9-thia-1,3,7-triaza-fluoren-7-yl]-but-2-en-1-one (0.125 g, 0.00026 mol) in dichloromethane (1.25 ml) was added dimethylamine (2.0M solution in THF) (0.65 ml, 0.001 mol) over 1-2 min. The resulting mixture was stirred at RT for 2 hours. TLC (10% MeOH/Dichloromethane) indicates no SM present, a new polar spot seen. Conc. the reaction mixture to dryness under vacuum at 30° C. Purified by silica gel chromatography (ISCO system) using a gradient of dichloromethane—30% methanol/dichloromethane. The fractions combined, conc to dryness and the residue dissolved in 10% MeOH/DCM, filtered through a filter paper. The filterate was conc. to dryness and dried under vacuum at RT O/N to give 0.03 g (23%) of desired product. 1H-NMR (CD3OD-d3) δ 8.46 (m, 1H), 8.39 (s, 1H), 7.88 (m, 1H), 7.62 (m, 1H), 7.42 (t, 1H), 6.67 (m, 1H), 3.94 (m, 2H), 3.87 (m, 4H), 2.75 (m, 2H), 2.56 (s, 6H); LCMS RT=2.38 min, [M+H]+=446.0.

Workup

  1. customat 30° C
  2. customPurified by silica gel chromatography (ISCO system)
  3. dissolutionthe residue dissolved in 10% MeOH/DCM
  4. filtrationfiltered through a filter paper
  5. customdried under vacuum at RT O/N

Sources & evidence

ORD record
ord-288ccb76d02b44dc9094e895bc478b69
Source dataset
uspto-grants-2013_08
Patent number
US08501755B2

Reaction notes

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