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Hydrochloric Acid → 6-((Tert-butyldiphenylsilyloxy)methyl)-3-(2-fluoro-5-methoxyphenyl)-2-neopentylpyridine

HRID 1049525
Notes
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Reaction equation

HRID 1049525 reaction equation
[Si:1]([O:18][CH2:19][C:20]1[N:25]=[C:24](Cl)[C:23]([C:27]2[CH:32]=[C:31]([O:33][CH3:34])[CH:30]=[CH:29][C:28]=2[F:35])=[CH:22][CH:21]=1)([C:14]([CH3:17])([CH3:16])[CH3:15])([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:36][C:37]([CH3:42])([CH3:41])[CH2:38][Mg]Cl.Cl>CC(C1C=CC=C(C(C)C)C=1N1[C-]=[N+](C2C(C(C)C)=CC=CC=2C(C)C)CC1)C.C1COCC1.C(OCC)C>[Si:1]([O:18][CH2:19][C:20]1[N:25]=[C:24]([CH2:36][C:37]([CH3:42])([CH3:41])[CH3:38])[C:23]([C:27]2[CH:32]=[C:31]([O:33][CH3:34])[CH:30]=[CH:29][C:28]=2[F:35])=[CH:22][CH:21]=1)([C:14]([CH3:17])([CH3:16])[CH3:15])([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 3

HCID 313Hydrochloric AcidHCID 1317338986-((Tert-butyldiphenylsilyloxy)methyl)-2-chloro-3-(2-fluoro-5-methoxyphenyl)pyridineHCID 178418809HCID 178418809, compound

Product 1

HCID 1317338996-((Tert-butyldiphenylsilyloxy)methyl)-3-(2-fluoro-5-methoxyphenyl)-2-neopentylpyridine

Reagents, catalysts & solvents 3

HCID 10883669
SIPr
Catalyst
HCID 3283Diethyl EtherSolvent
HCID 8028TetrahydrofuranSolvent

Procedure

Under an argon atmosphere, to a solution of 6-((tert-butyldiphenylsilyloxy)methyl)-2-chloro-3-(2-fluoro-5-methoxyphenyl)pyridine (10.0 g) and a PEPPSI™-SIPr catalyst (trade name) (1.33 g) in THF (100 mL) was added a 1.5 M solution of 2,2-dimethylpropylmagnesium chloride in diethyl ether (50 mL), and the mixture was stirred at room temperature for 16 hr. To the reaction mixture was added 1N hydrochloric acid at 0° C., and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure to give the title compound (10.0 g) as a brown crude oil. This compound was used for the next step without further purification.

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe extract was washed with saturated brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. customThe solvent was evaporated under reduced pressure

Sources & evidence

ORD record
ord-64f35ed8b637464ea676e34bae26b068
Source dataset
uspto-grants-2016_07
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09382188B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes