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Sodium Carbonate → HCID 71547691, compound

HRID 1771153
Notes
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Reaction equation

HRID 1771153 reaction equation
C(=O)([O:7][C:8]1[CH:13]=[CH:12][C:11]([F:14])=[C:10]([C:15]([C:17]2[CH:18]=[C:19]3[C:24](=[CH:25][CH:26]=2)[N:23]=[CH:22][C:21](Cl)=[N:20]3)=[O:16])[C:9]=1[F:28])OC(C)(C)C.[C:30]1(B(O)O)[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1.C([O-])([O-])=O.[Na+].[Na+]>O1CCOCC1.O.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[F:28][C:9]1[C:8]([OH:7])=[CH:13][CH:12]=[C:11]([F:14])[C:10]=1[C:15]([C:17]1[CH:18]=[C:19]2[C:24](=[CH:25][CH:26]=1)[N:23]=[CH:22][C:21]([C:30]1[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1)=[N:20]2)=[O:16]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 66827Phenylboronic AcidHCID 89484872HCID 89484872, compound

Product 1

HCID 71547691HCID 71547691, compound

Reagents, catalysts & solvents 3

HCID 44119782Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)Catalyst
HCID 962
Water
Solvent
HCID 312751,4-DioxaneSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of tert-butyl (3-(3-chloroquinoxaline-6-carbonyl)-2,4-difluorophenyl) carbonate (60 mg, 0.14 mmol, 1.0 eq.), phenylboronic acid (17 mg, 0.14 mmol, 1.1 eq.), Pd(dppf)2Cl2 (6 mg, 0.007 mmol, 0.05 eq.) and Na2CO3 (30 mg, 0.28 mmol, 2.0 eq.) in dioxane and water (9 mL/1 mL) was heated at 100° C. overnight under N2 protection, then cooled and concentrated. The resulting residue was purified via flash column chromatography (PE/EA=3/1, v/v) to (2,6-difluoro-3-hydroxyphenyl)(3-phenylquinoxalin-6-yl)methanone (15.4 mg, 30%). LRMS (M+H+) m/z calculated 363.1, found 363.0. 1H NMR (CDCl3, 400 MHz) δ 10.38 (s, 1 H), 9.76 (s, 1 H), 8.28-8.40 (m, 5 H), 7.60-7.62 (m, 3 H), 7.18-7.27 (m, 2 H).

Workup

  1. temperaturecooled
  2. concentrationconcentrated
  3. customThe resulting residue was purified via flash column chromatography (PE/EA=3/1

Sources & evidence

ORD record
ord-a3474e1ec32a481aa87d70190f91c2fe
Source dataset
uspto-grants-2016_02
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09249111B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes