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Water → 7-(1-azidoethyl)-6-(4-fluorophenyl)-3-methyl-5H-[1,3]thiazolo[3,2-a]pyrimidin-5-one

HRID 1429808
Notes
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Reaction equation

HRID 1429808 reaction equation
[N:1]([CH:4]([C:6]1[N:7]=[C:8]2[S:16][CH:15]=[C:14]([CH3:17])[N:9]2[C:10](=[O:13])[C:11]=1Br)[CH3:5])=[N+:2]=[N-:3].[F:18][C:19]1[CH:24]=[CH:23][C:22](B(O)O)=[CH:21][CH:20]=1.C(=O)([O-])[O-].[Na+].[Na+].O>O1CCOCC1.C(OCC)(=O)C.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[N:1]([CH:4]([C:6]1[N:7]=[C:8]2[S:16][CH:15]=[C:14]([CH3:17])[N:9]2[C:10](=[O:13])[C:11]=1[C:22]1[CH:23]=[CH:24][C:19]([F:18])=[CH:20][CH:21]=1)[CH3:5])=[N+:2]=[N-:3]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

8

Reactant 4

HCID 962WaterHCID 10340Sodium CarbonateHCID 2856454-Fluorophenylboronic acidHCID 581114387-(1-azidoethyl)-6-bromo-3-methyl-5H-thiazolo[3,2-a]pyrimidin-5-one

Product 1

HCID 866500707-(1-azidoethyl)-6-(4-fluorophenyl)-3-methyl-5H-[1,3]thiazolo[3,2-a]pyrimidin-5-oneYield 66%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 8857Ethyl AcetateSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
100 °C

Procedure

To a mixture of 7-(1-azidoethyl)-6-bromo-3-methyl-5H-[1,3]thiazolo[3,2-a]pyrimidin-5-one (0.10 g, 0.32 mmol) and 4-fluorophenylboronic acid (53 mg, 0.38 mmol) in 1,4-dioxane (2 mL) was added a 1M solution of sodium carbonate in water (0.38 mL, 0.38 mmol) and tetrakis(triphenylphosphine)palladium(0) (18 mg, 0.016 mmol). The reaction mixture was heated at 100° C. overnight. After cooling to room temperature, the mixture was diluted with ethyl acetate, washed with water, brine, dried over MgSO4, and concentrated. The crude mixture was purified on silica gel, eluting with 0 to 40% EtOAc in hexane, to give the desired product (69 mg, 66%). LCMS calculated for C15H13FN5OS (M+H)+: m/z=330.1. Found: 330.0.

Workup

  1. temperatureAfter cooling to room temperature
  2. washwashed with water, brine
  3. dry with materialdried over MgSO4
  4. concentrationconcentrated
  5. customThe crude mixture was purified on silica gel
  6. washeluting with 0 to 40% EtOAc in hexane

Sources & evidence

ORD record
ord-8b4e7999a8aa461caef972f83d458662
Source dataset
uspto-grants-2015_01
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08940752B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes