Triethylamine → HCID 86604505, compound

HRID 1858828Notes

Reaction equation

HRID 1858828 reaction equation
O[CH2:2][C:3]1[CH:4]=[CH:5][C:6]([CH:9]2[CH2:14][CH2:13][N:12]([C:15]([O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[O:16])[CH2:11][CH:10]2[O:22][CH2:23][C:24]2[CH:33]=[CH:32][C:31]3[C:26](=[CH:27][CH:28]=[CH:29][CH:30]=3)[CH:25]=2)=[N:7][CH:8]=1.C(N(CC)CC)C.CS([Cl:45])(=O)=O>CN(C=O)C>[Cl:45][CH2:2][C:3]1[CH:4]=[CH:5][C:6]([CH:9]2[CH2:14][CH2:13][N:12]([C:15]([O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[O:16])[CH2:11][CH:10]2[O:22][CH2:23][C:24]2[CH:33]=[CH:32][C:31]3[C:26](=[CH:27][CH:28]=[CH:29][CH:30]=3)[CH:25]=2)=[N:7][CH:8]=1

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 86756065HCID 86756065, compound

Product 1

HCID 86604505HCID 86604505, compoundYield 35%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
0 °C

Procedure

A solution of 70 mg (0.156 mmol) of tert-butyl (3'RS,4'RS)-5-hydroxymethyl-3'-(naphthalen-2-ylmethoxy)-3',4',5',6'-tetrahydro-2'H-[2,4']bipyridine-1'-carboxylate in 2 ml of absolute DMF was cooled to -10° C. and treated with 26 μl (19 mg,0.187 mmol) of triethylamine. 13 μl (20 mg, 0.172 mmol) of methanesulphonyl chloride and 2 mg of N,N-dimethylaminopyridine (DMAP) were added at -10 to -15° C. and subsequently the mixture was stirred at 0° C. for 1 hour. For the working-up, the mixture was partitioned between 25 ml of ethyl acetate and 25 ml of aqueous 5% ammonium chloride solution and the organic phase was separated. The aqueous phase was extracted three times with 10 ml of ethyl acetate each time. The combined ethyl acetate phases were dried over magnesium sulphate and finally evaporated under reduced pressure. The crude product was purified by chromatography on silica gel with a 1:1 mixture of ethyl acetate and hexane as the eluent. There were obtained 22 mg (35% of theory) of tert-butyl (3'RS,4'RS)-5-chloromethyl-3'-(naphthalen-2-ylmethoxy)-3',4',5',6'-tetrahydro-2'H-[2,4']bipyridine-1'-carboxylate as a light yellow oil; MS: 467, 469 (M+H)+.

Workup

  1. customthe mixture was partitioned between 25 ml of ethyl acetate and 25 ml of aqueous 5% ammonium chloride solution
  2. customthe organic phase was separated
  3. extractionThe aqueous phase was extracted three times with 10 ml of ethyl acetate each time
  4. dry with materialThe combined ethyl acetate phases were dried over magnesium sulphate
  5. customfinally evaporated under reduced pressure
  6. customThe crude product was purified by chromatography on silica gel with a 1:1 mixture of ethyl acetate and hexane as the eluent

Sources & evidence

ORD record
ord-ed2ca8f8695b4ba3ac8b6a04ab4dc75e
Source dataset
uspto-grants-2000_11
Patent number
US06150526

Reaction notes

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