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Hydrochloric Acid → 2-{[(3,5-Bis-trifluoromethyl-benzyl)-(2-methyl-2H-tetrazol-5-yl)-amino]-methyl}-4-trifluoromethyl-phenyl-cyclobutyl-methanol

HRID 2075084
Notes
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Reaction equation

HRID 2075084 reaction equation
[F:1][C:2]([F:35])([F:34])[C:3]1[CH:4]=[C:5]([CH:27]=[C:28]([C:30]([F:33])([F:32])[F:31])[CH:29]=1)[CH2:6][N:7]([CH2:14][C:15]1[CH:22]=[C:21]([C:23]([F:26])([F:25])[F:24])[CH:20]=[CH:19][C:16]=1[CH:17]=[O:18])[C:8]1[N:9]=[N:10][N:11]([CH3:13])[N:12]=1.[CH:36]1([Mg]Br)[CH2:39][CH2:38][CH2:37]1.Cl>O1CCCC1>[F:33][C:30]([F:31])([F:32])[C:28]1[CH:27]=[C:5]([CH:4]=[C:3]([C:2]([F:1])([F:34])[F:35])[CH:29]=1)[CH2:6][N:7]([CH2:14][C:15]1[CH:22]=[C:21]([C:23]([F:26])([F:25])[F:24])[CH:20]=[CH:19][C:16]=1[CH:17]([CH:36]1[CH2:39][CH2:38][CH2:37]1)[OH:18])[C:8]1[N:9]=[N:10][N:11]([CH3:13])[N:12]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 589665242-{[(3,5-bis-trifluoromethyl-benzyl)(2-methyl-2H-tetrazol-5-yl)amino]-methyl}-4-trifluoromethyl-benzaldehydeHCID 178419648HCID 178419648, compound

Product 1

HCID 589686942-{[(3,5-Bis-trifluoromethyl-benzyl)-(2-methyl-2H-tetrazol-5-yl)-amino]-methyl}-4-trifluoromethyl-phenyl-cyclobutyl-methanolYield 25%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
-10 °C

Procedure

To a solution of 2-{[(3,5-bis-trifluoromethyl-benzyl)(2-methyl-2H-tetrazol-5-yl)amino]-methyl}-4-trifluoromethyl-benzaldehyde (1.5 g; 2.9 mmol) in tetrahydrofuran (14 mL) at −10° C. was added dropwise cyclobutylmagnesium bromide (9 mL; 5.4 mmol; 0.6M solution in tetrahydrofuran). The reaction was stirred at −10° C. for 1.5 hours. To quench the reaction, at 0° C. was added aqueous 2N hydrochloric acid. Reaction extracted with ethyl acetate. The organic was washed with aqueous 2N hydrochloric acid, water and brine. It was dried sodium sulfate and concentrated under reduced pressure. The residue was purified by 40 g RediSep column (Teledyne Isco Inc., Lincoln Nebr.) (eluted with 15-70% ethyl acetate in heptane) to give 420 mg (25% yield) as a gum. MS (ES−): Calc; 567.4, Found: 612.6 (M+HCO2). 1H NMR (400 MHz, CDCl3) δ ppm 7.78 (s, 1H), 7.66 (s, 2H), 7.52 (d, J=8.30 Hz, 1H), 7.49 (d, J=8.30 Hz, 1H), 7.35 (s, 1H), 4.86 (q, J=15.77 Hz, 2H), 4.86 (s, 1H), 4.77 (q, J=15.77, 16.18 Hz, 2H), 4.20 (s, 3H), 2.68 (m, 1H), 2.05-1.96 (m, 2H), 1.93-1.76 (m, 3H), 1.70 (m, 1H).

Workup

  1. customTo quench
  2. customthe reaction
  3. customReaction
  4. extractionextracted with ethyl acetate
  5. washThe organic was washed with aqueous 2N hydrochloric acid, water and brine
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by 40 g RediSep column (Teledyne Isco Inc., Lincoln Nebr.) (eluted with 15-70% ethyl acetate in heptane)
  8. customto give 420 mg (25% yield) as a gum

Sources & evidence

ORD record
ord-6ee311477a64480297dd3b812e4ca59f
Source dataset
uspto-grants-2011_04
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07919506B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes