Acetic Acid → HCID 59432321, compound

HRID 507153Notes

Reaction equation

HRID 507153 reaction equation
C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].[F:15][C:16]([F:52])([F:51])[C:17]1[CH:18]=[C:19]([CH:44]=[C:45]([C:47]([F:50])([F:49])[F:48])[CH:46]=1)[CH2:20][N:21]([C:38]1[N:39]=[N:40][N:41]([CH3:43])[N:42]=1)[C@H:22]1[CH2:28][CH2:27][CH2:26][NH:25][C:24]2[CH:29]=[C:30]([C:34]([F:37])([F:36])[F:35])[C:31]([CH3:33])=[CH:32][C:23]1=2.[CH3:53][O:54][C:55](=[O:65])[C:56]1[CH:61]=[C:60]([CH:62]=O)[CH:59]=[CH:58][C:57]=1[F:64].C(O)(=O)C>C(#N)C.ClCCl>[CH3:53][O:54][C:55](=[O:65])[C:56]1[CH:61]=[C:60]([CH2:62][N:25]2[CH2:26][CH2:27][CH2:28][C@H:22]([N:21]([CH2:20][C:19]3[CH:44]=[C:45]([C:47]([F:50])([F:48])[F:49])[CH:46]=[C:17]([C:16]([F:51])([F:15])[F:52])[CH:18]=3)[C:38]3[N:39]=[N:40][N:41]([CH3:43])[N:42]=3)[C:23]3[CH:32]=[C:31]([CH3:33])[C:30]([C:34]([F:35])([F:36])[F:37])=[CH:29][C:24]2=3)[CH:59]=[CH:58][C:57]=1[F:64]

Participants

7

Reactant 4

HCID 176Acetic AcidHCID 5049666Sodium triacetoxyborohydrideHCID 24971957Methyl 2-fluoro-5-formylbenzoateHCID 59432408(S)-(3,5-bistrifluoromethylbenzyl)-(2-methyl-2H-tetrazol-5-yl)-(7-methyl-8-trifluoromethyl-2,3,4,5-tetrahydro-1H-benzo[b]azepin-5-yl)amine

Product 1

HCID 59432321HCID 59432321, compoundYield 92.3%

Reagents, catalysts & solvents 2

HCID 6342AcetonitrileSolventHCID 6344DichloromethaneSolvent

Procedure

Add sodium triacetoxyborohydride (0.153 g, 0.724 mmol) portionwise to a solution of (S)-(3,5-bis-trifluoromethyl-benzyl)-(2-methyl-2H-tetrazol-5-yl)-(7-methyl-8-trifluoromethyl-2,3,4,5-tetrahydro-1H-benzo[b]azepin-5-yl)-amine (Example 3, Step 18) (0.100 g, 0.181 mmol), 2-fluoro-5-formyl-benzoic acid methyl ester (0.100 g, 0.543 mmol) and glacial acetic acid (1 mL) in acetonitrile (10 mL) at room temperature under an atmosphere of nitrogen and stir for 24 h. Quench the reaction with saturated sodium bicarbonate (5 mL) and dilute with dichloromethane (15 mL). Separate the layers and wash the organic layer with saturated sodium bicarbonate and brine (20 mL each). Dry the organic layer over sodium sulfate, filter and remove the solvent under reduced pressure. Purify the residue using flash column chromatography on silica gel, eluting with hexanes/ethyl acetate (80:20), to provide the title compound as a white foam (0.120 g, 92%), 1H NMR (CDCl3, 300 MHz) δ 1.23-1.34 (m, 2H), 1.64-1.72 (m, 2H), 2.10-2.20 (m, 1H), 2.32 (s, 3H), 2.76-2.80 (m, 1H), 2.94-3.02 (m, 1H), 3.89 (s, 3H), 4.14 (s, 3H), 4.23-4.54 (m, 2H), 4.76-5.02 (m, 2H), 5.62-5.70 (m, 1H), 6.90 (s, 1H), 7.10 (m, 1H), 7.35-7.43 (m, 2H), 7.56-7.80 (m, 2H), 7.89-7.92 (m, 1H); ESI MS m/z 719 [C32H28F10N6O2+H]+.

Workup

  1. customQuench
  2. customthe reaction with saturated sodium bicarbonate (5 mL)
  3. customSeparate the layers
  4. washwash the organic layer with saturated sodium bicarbonate and brine (20 mL each)
  5. dry with materialDry the organic layer over sodium sulfate
  6. filtrationfilter
  7. customremove the solvent under reduced pressure
  8. customPurify the residue
  9. washeluting with hexanes/ethyl acetate (80:20)

Sources & evidence

ORD record
ord-c7e54e1425484e6a88cb750a800f8de2
Source dataset
uspto-grants-2010_08
Patent number
US07786108B2

Reaction notes

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