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Potassium Phosphate, Tribasic → (1R,5S,6R)-5-(difluoromethyl)-5-(2-fluoro-5-(5-(prop-1-yn-1-yl)pyridin-3-yl)phenyl)-2-oxa-4-azabicyclo[4.1.0]hept-3-en-3-amine

HRID 1526657
Notes
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Reaction equation

HRID 1526657 reaction equation
P([O-])([O-])([O-])=O.[K+].[K+].[K+].Br[C:10]1[CH:11]=[CH:12][C:13]([F:27])=[C:14]([C@:16]2([CH:24]([F:26])[F:25])[C@@H:22]3[C@@H:20]([CH2:21]3)[O:19][C:18]([NH2:23])=[N:17]2)[CH:15]=1.[C:28]([C:31]1[CH:32]=[C:33](B(O)O)[CH:34]=[N:35][CH:36]=1)#[C:29][CH3:30]>O1CCOCC1.O.O.C(C1C(C(C)(C)C)=C([Pd]Cl)C=CC=1NC)(C)(C)C>[F:25][CH:24]([F:26])[C@@:16]1([C:14]2[CH:15]=[C:10]([C:33]3[CH:34]=[N:35][CH:36]=[C:31]([C:28]#[C:29][CH3:30])[CH:32]=3)[CH:11]=[CH:12][C:13]=2[F:27])[C@@H:22]2[C@@H:20]([CH2:21]2)[O:19][C:18]([NH2:23])=[N:17]1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 3

HCID 62657Potassium Phosphate, TribasicHCID 574164825-(1-Propynyl)pyridine-3-boronic Acid (contains varying amounts of Anhydride)HCID 90401254(1R,5S,6R)-5-(5-bromo-2-fluorophenyl)-5-(difluoromethyl)-2-oxa-4-azabicyclo[4.1.0]hept-3-en-3-amine

Product 1

HCID 90413015(1R,5S,6R)-5-(difluoromethyl)-5-(2-fluoro-5-(5-(prop-1-yn-1-yl)pyridin-3-yl)phenyl)-2-oxa-4-azabicyclo[4.1.0]hept-3-en-3-amineYield 74%

Reagents, catalysts & solvents 3

HCID 178482226HCID 178482226, compoundCatalystHCID 962WaterSolventHCID 218864351,4-Dioxane--water (1/1)Solvent

Conditions

Temperature
110 °C

Procedure

A microwave vial was charged with mixture of potassium phosphate (0.19 g, 0.90 mmol), (1R,5S,6R)-5-(5-bromo-2-fluorophenyl)-5-(difluoromethyl)-2-oxa-4-azabicyclo[4.1.0]hept-3-en-3-amine (16f-B, 0.10 g, 0.30 mmol), (5-(prop-1-yn-1-yl)pyridin-3-yl)boronic acid (0.12 g, 0.75 mmol) and 1,1-bis[(di-t-butyl-p-methylaminophenyl]palladium(II) chloride (10.56 mg, 0.015 mmol) in dioxane/water (2.0/0.5 mL). The reaction mixture was heated to 110° C. for 30 min in the microwave. The reaction mixture was then diluted with water and extracted with DCM three times. The combined organic extracts were washed with brine and dried over sodium sulfate. The filtrate was concentrated in vacuo and the crude material was purified by silica gel chromatography (0-100% EtOAc-DCM) to obtain the title compound as a white solid (82.3 mg, 74% yield). MS m/z=372 [M+H]+. Calculated for C20H16F3N3O: 371.4.

Workup

  1. extractionextracted with DCM three times
  2. washThe combined organic extracts were washed with brine
  3. dry with materialdried over sodium sulfate
  4. concentrationThe filtrate was concentrated in vacuo
  5. customthe crude material was purified by silica gel chromatography (0-100% EtOAc-DCM)

Sources & evidence

ORD record
ord-43ea1044f7ad414ca637e1665872f32e
Source dataset
uspto-grants-2015_07
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09085576B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes