Methylamine → HCID 66872875, 화합물

HRID 1036340노트

반응식

HRID 1036340 반응식
[CH3:1][NH2:2].[C:3]([O:7][C:8]([N:10]1[CH2:15][CH2:14][C:13]([C:18]2[CH:23]=[CH:22][C:21]([Cl:24])=[CH:20][CH:19]=2)([CH:16]=O)[CH2:12][CH2:11]1)=[O:9])([CH3:6])([CH3:5])[CH3:4].[BH4-].[Na+]>C(O)C>[C:3]([O:7][C:8]([N:10]1[CH2:15][CH2:14][C:13]([C:18]2[CH:23]=[CH:22][C:21]([Cl:24])=[CH:20][CH:19]=2)([CH2:16][NH:2][CH3:1])[CH2:12][CH2:11]1)=[O:9])([CH3:6])([CH3:5])[CH3:4]

참가 물질

5

반응물 3

HCID 6329MethylamineHCID 4311764Sodium borohydrideHCID 59840466Tert-butyl 4-(4-chlorophenyl)-4-formylpiperidine-1-carboxylate

생성물 1

HCID 66872875HCID 66872875, 화합물수율 68%

시약·촉매·용매 1

HCID 702Ethanol용매

실험 절차

A mixture of methylamine in ethanol (18 ml, 33% in ethanol) and 4-(4-chlorophenyl)-4-formyl-piperidine-1-carboxylic acid tert-butyl ester (206 mg, 0.62 mmol) was stirred at room temperature overnight. The solvents were concentrated. The crude material was redissolved in methanol (18 ml) followed by addition of sodium borohydride (49 mg, 1.29 mmol). After stirring for 40 minutes at room temperature, the mixture was partitioned between ethyl acetate (100 ml) and a saturated aqueous solution of sodium hydrogen carbonate (100 ml). After separation of the two phases the aqueous phase was re-extracted with ethyl acetate (100 ml). The combined organic layers were dried (Na2SO4), filtered and concentrated. Flash column chromatography on silica, eluting with 10% methanol in dichloromethane gave 4-(4-chloro-phenyl)-4-methylaminomethyl-piperidine-1-carboxylic acid tert-butyl ester (142 mg, 0.42 mmol, 68%). GC-MS m/z 239 [(M-Boc)+], Rt 5.18 min. 1H NMR (250 MHz, CDCl3): 1.43 (9H, s), 1.80-1.88 (2, m), 2.15-2.24 (2, m), 2.31 (3H, s), 2.81 (2H, s), 2.98-3.09 (2H, m), 3.72-3.78 (2H, m), 7.32 (2H, d, 9 Hz), 7.38 (2H, d, 9 Hz).

후처리

  1. concentrationThe solvents were concentrated
  2. dissolutionThe crude material was redissolved in methanol (18 ml)
  3. stirringAfter stirring for 40 minutes at room temperature
  4. customthe mixture was partitioned between ethyl acetate (100 ml)
  5. customAfter separation of the two phases the aqueous phase
  6. extractionwas re-extracted with ethyl acetate (100 ml)
  7. dry with materialThe combined organic layers were dried (Na2SO4)
  8. filtrationfiltered
  9. concentrationconcentrated
  10. washFlash column chromatography on silica, eluting with 10% methanol in dichloromethane

출처 및 근거

ORD 기록
ord-077cd24e67854630999c421949808337
출처 데이터셋
uspto-grants-2013_10
특허 번호
US08546407B2

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