Sodium cyanoborohydride → (S)-1-(Tetrahydro-pyran-4-ylmethyl)-azepane-2-carboxylic acid (5-tert-butyl-isoxazol-3-yl)-amide

HRID 336218Notes

Reaction equation

HRID 336218 reaction equation
C([BH3-])#N.[Na+].[O:5]1[CH2:10][CH2:9][CH:8]([CH:11]=O)[CH2:7][CH2:6]1.Cl.[C:14]([C:18]1[O:22][N:21]=[C:20]([NH:23][C:24]([C@@H:26]2[CH2:32][CH2:31][CH2:30][CH2:29][CH2:28][NH:27]2)=[O:25])[CH:19]=1)([CH3:17])([CH3:16])[CH3:15]>CN(C=O)C.CCOC(C)=O>[C:14]([C:18]1[O:22][N:21]=[C:20]([NH:23][C:24]([C@@H:26]2[CH2:32][CH2:31][CH2:30][CH2:29][CH2:28][N:27]2[CH2:11][CH:8]2[CH2:7][CH2:6][O:5][CH2:10][CH2:9]2)=[O:25])[CH:19]=1)([CH3:17])([CH3:15])[CH3:16]

Participants

6

Reactant 3

HCID 5003444Sodium cyanoborohydrideHCID 9964078Tetrahydro-2H-pyran-4-carboxaldehydeHCID 86660403(S)-Perhydro-azepine-2-carboxylic acid (5-tert-butyl-isoxazol-3-yl)-amide hydrochloride

Product 1

HCID 58563913(S)-1-(Tetrahydro-pyran-4-ylmethyl)-azepane-2-carboxylic acid (5-tert-butyl-isoxazol-3-yl)-amide

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

Sodium cyanoborohydride (0.19 g, 3.02 mmol) and tetrahydro-pyran-4-carbaldehyde (0.26 g, 2.26 mmol) is added to a solution of (S)-perhydro-azepine-2-carboxylic acid (5-tert-butyl-isoxazol-3-yl)-amide hydrochloride (prepared according to Method T, step 6) (0.4 g, 1.51 mmol) in DMF (5.0 mL). After stirring for four hours, the reaction mixture is diluted with EtOAc and washed twice with water. The organic phase is dried over anhydrous Na2SO4 and after removal of the solvent under reduced pressure, the crude is purified by prep TLC to afford the title compound; m/z 364 [M+H].

Workup

  1. washwashed twice with water
  2. dry with materialThe organic phase is dried over anhydrous Na2SO4
  3. customafter removal of the solvent under reduced pressure
  4. customthe crude is purified by prep TLC

Sources & evidence

ORD record
ord-e9cb4a17530d4635900ad0729b303dbb
Source dataset
uspto-grants-2014_11
Patent number
US08889670B2

Reaction notes

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