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Sodium methanethiolate → N-(4-Fluoro-2-(3-(methylthio)prop-1-ynyl)benzyl)-3-(benzyloxy)-9,9-dimethyl-4-oxo-4,6,7,9-tetrahydropyrimido[2,1-c][1,4]oxazine-2-carboxamide

HRID 1788209
Notes
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Reaction equation

HRID 1788209 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][S-:42].[Na+]>CN(C)C=O.C(OCC)(=O)C>[F:15][C:13]1[CH:12]=[CH:11][C:10]([CH2:16][NH:17][C:18]([C:20]2[N:21]=[C:22]3[N:27]([C:28](=[O:38])[C:29]=2[O:30][CH2:31][C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=2)[CH2:26][CH2:25][O:24][C:23]3([CH3:39])[CH3:40])=[O:19])=[C:9]([C:8]#[C:7][CH2:6][S:42][CH3:41])[CH:14]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 2

HCID 4378561Sodium methanethiolateHCID 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 21070013N-(4-Fluoro-2-(3-(methylthio)prop-1-ynyl)benzyl)-3-(benzyloxy)-9,9-dimethyl-4-oxo-4,6,7,9-tetrahydropyrimido[2,1-c][1,4]oxazine-2-carboxamideYield 78.1%

Reagents, catalysts & solvents 2

HCID 6228
Dimethylformamide
Solvent
HCID 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 (0.160 g, 0.28 mmol) in N,N-dimethylformamide (3 ml) was treated at 0° C. with sodium thiomethoxide (0.026 g, 0.37 mmol) and the resulting mixture stirred for 2 h. The reaction mixture was then diluted with ethyl acetate, washed with saturated sodium bicarbonate and brine, then dried over anhydrous magnesium sulfate and concentrated under reduced pressure. Chromatography of the residue on silica gel (elution gradient of ethyl acetate in hexane) gave 0.114 g (78% yield) of the title material as a white solid. 1HNMR 400 MHz (CDCl3) δ ppm: 1.64 (6H, s, 2×CH3), 2.28 (3H, s, SCH3), 3.45 (2H, s, SCH2), 4.05 (4H, m, 2×CH2), 4.69 (2H, d, J=6.1 Hz, NCH2), 5.31 (2H, s, OCH2), 6.98 (1H, m, aromatic), 7.15 (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), 7.80 (1H, broad t, NH). HRMS (ESI+) calculated for C28H29FN3O4S [M+H+]: 522.1863; found: 522.1844.

Workup

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

Sources & evidence

ORD record
ord-3f6a355a805e457fb1664f39a5be0780
Source dataset
uspto-grants-2009_03
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07511037B2

Reaction notes

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