Dimethylamine → N-(2-(3-(Dimethylamino)prop-1-ynyl)-4-fluorobenzyl)-3-(benzyloxy)-9,9-dimethyl-4-oxo-4,6,7,9-tetrahydropyrimido[2,1-c][1,4]oxazine-2-carboxamide

HRID 1726644Notes

Reaction equation

HRID 1726644 reaction equation
CS(O[CH2:6][C:7]#[C:8][C:9]1[CH:14]=[C:13]([F:15])[CH:12]=[CH:11][C:10]=1[CH2:16][NH:17][C:18]([C:20]1[N:21]=[C:22]2[N:27]([C:28](=[O:38])[C:29]=1[O:30][CH2:31][C:32]1[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=1)[CH2:26][CH2:25][O:24][C:23]2([CH3:40])[CH3:39])=[O:19])(=O)=O.[CH3:41][NH:42][CH3:43]>C(#N)C.O1CCCC1.C(OCC)(=O)C>[CH3:41][N:42]([CH3:43])[CH2:6][C:7]#[C:8][C:9]1[CH:14]=[C:13]([F:15])[CH:12]=[CH:11][C:10]=1[CH2:16][NH:17][C:18]([C:20]1[N:21]=[C:22]2[N:27]([C:28](=[O:38])[C:29]=1[O:30][CH2:31][C:32]1[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=1)[CH2:26][CH2:25][O:24][C:23]2([CH3:39])[CH3:40])=[O:19]

Participants

6

Reactant 2

HCID 674DimethylamineHCID 210698463-[2-((3-(Benzyloxy)-9,9-dimethyl-4-oxo-4,6,7,9-tetrahydropyrimido[2,1-c][1,4]oxazine-2-carboxamido)methyl)-5-fluorophenyl]prop-2-ynyl methanesulfonate

Product 1

HCID 21069978N-(2-(3-(Dimethylamino)prop-1-ynyl)-4-fluorobenzyl)-3-(benzyloxy)-9,9-dimethyl-4-oxo-4,6,7,9-tetrahydropyrimido[2,1-c][1,4]oxazine-2-carboxamideYield 88%

Reagents, catalysts & solvents 3

HCID 6342AcetonitrileSolventHCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

A solution of intermediate 183, 3-[2-((3-(benzyloxy)-9,9-dimethyl-4-oxo-4,6,7,9-tetrahydropyrimido[2,1-c][1,4]oxazine-2-carboxamido)methyl)-5-fluorophenyl]prop-2-ynyl methanesulfonate (0.100 g, 0.18 mmol) in acetonitrile (5 ml) was treated at 22° C. with 0.3 ml (0.6 mmol) of a 2 M solution of dimethylamine in tetrahydrofuran and the resulting mixture was stirred for 30 min. The reaction mixture was then diluted with ethyl acetate, washed with saturated sodium bicarbonate, brine, then dried over anhydrous magnesium sulfate and concentrated under reduced pressure to give 0.080 g (88% yield) of the title material as a white solid. 1HNMR 400 MHz (CDCl3) δ ppm: 1.64 (6H, s, 2×CH3), 2.43 (6H, s, 2×NCH3), 3.58 (2H, broad s, CH2), 4.05 (4H, m, 2×CH2), 4.70 (2H, d, J=6.0 Hz, NCH2), 5.30 (2H, s, OCH2), 7.01 (1H, m, aromatic), 7.18 (1H, dd, J=3 Hz and J=9.1 Hz, aromatic), 7.32-7.38 (4H, m, aromatics), 7.50-7.53 (2H, m, aromatics), 7.79 (1H, broad t, NH). HRMS (ESI+) calculated for C29H32FN4O4 [M+H+]: 519.2408; found: 519.2407.

Workup

  1. washwashed with saturated sodium bicarbonate, brine
  2. dry with materialdried over anhydrous magnesium sulfate
  3. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-c77a2a5a05794ab5942296ef00142b29
Source dataset
uspto-grants-2009_02
Patent number
US07491819B1

Reaction notes

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