Methyl iodide → HCID 86657803, compound

HRID 1971959Notes

Reaction equation

HRID 1971959 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][C@H:11]([OH:14])[C@H:10]([CH2:15][O:16][C:17]2[N:18]=[N:19][C:20]([CH2:36][CH2:37][CH2:38][CH3:39])=[C:21]([C:23]3[CH:28]=[CH:27][C:26]([O:29][CH:30]4[CH2:35][CH2:34][CH2:33][CH2:32][CH2:31]4)=[CH:25][CH:24]=3)[CH:22]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[H-].[Na+].[CH3:42]I>CN(C=O)C.C(OCC)(=O)C>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][C@H:11]([O:14][CH3:42])[C@H:10]([CH2:15][O:16][C:17]2[N:18]=[N:19][C:20]([CH2:36][CH2:37][CH2:38][CH3:39])=[C:21]([C:23]3[CH:24]=[CH:25][C:26]([O:29][CH:30]4[CH2:35][CH2:34][CH2:33][CH2:32][CH2:31]4)=[CH:27][CH:28]=3)[CH:22]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

6

Reactant 3

HCID 6328Methyl iodideHCID 24758Sodium hydrideHCID 86657800HCID 86657800, compound

Product 1

HCID 86657803HCID 86657803, compound

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
0 °C

Procedure

To a stirred solution of (±)-cis-3-[6-butyl-5-(4-cyclohexyloxy-phenyl)-pyridazin-3-yloxymethyl]-4-hydroxy-piperidine-1-carboxylic acid tert-butyl ester (0.296 mmol, 0.16 g; Example 43) in DMF (2 mL) at 0° C. was added sodium hydride (80 mg) followed by methyl iodide (0.2 mL) and continued stirring at 0° C. for 30 min. The reaction mixture was diluted with ethyl acetate (10 mL) and quenched excess NaH by drop-wise addition of methanol. This was washed with brine (10 mL), organic layer was dried, filtered and concentrated under reduced pressure. The residue was purified by flash silica gel column chromatography by eluating with 20% ethyl acetate in hexanes to afford (±)-cis-3-[6-butyl-5-(4-cyclohexyloxy-phenyl)-pyridazin-3-yloxymethyl]-4-methoxy-piperidine-1-carboxylic acid tert-butyl ester (0.145 g) as an oil.

Workup

  1. customquenched excess NaH
  2. additionby drop-wise addition of methanol
  3. washThis was washed with brine (10 mL), organic layer
  4. customwas dried
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by flash silica gel column chromatography

Sources & evidence

ORD record
ord-d8574f23d26a44df969b35da6254ea99
Source dataset
uspto-grants-2013_04
Patent number
US08431575B2

Reaction notes

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