Acetic Acid → (2R,4R)-4-(3-(2-Chloro-4-fluoro-benzoylamino)-phenylamino)-2-methyl-piperidine-1-carboxylic acid tert-butyl ester

HRID 1591897ノート

反応式

HRID 1591897 の反応式
[NH2:1][C:2]1[CH:3]=[C:4]([NH:8][C:9](=[O:18])[C:10]2[CH:15]=[CH:14][C:13]([F:16])=[CH:12][C:11]=2[Cl:17])[CH:5]=[CH:6][CH:7]=1.[C:19]([O:23][C:24]([N:26]1[CH2:31][CH2:30][C:29](=O)[CH2:28][C@H:27]1[CH3:33])=[O:25])([CH3:22])([CH3:21])[CH3:20].C(O)(=O)C.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>O1CCCC1.CO>[C:19]([O:23][C:24]([N:26]1[CH2:31][CH2:30][C@@H:29]([NH:1][C:2]2[CH:7]=[CH:6][CH:5]=[C:4]([NH:8][C:9](=[O:18])[C:10]3[CH:15]=[CH:14][C:13]([F:16])=[CH:12][C:11]=3[Cl:17])[CH:3]=2)[CH2:28][C@H:27]1[CH3:33])=[O:25])([CH3:22])([CH3:20])[CH3:21]

参加物

7

反応物 4

HCID 176Acetic AcidHCID 5049666Sodium triacetoxyborohydrideHCID 16775600N-(3-Aminophenyl)-2-chloro-4-fluorobenzamideHCID 25110958tert-Butyl (2R)-2-methyl-4-oxopiperidine-1-carboxylate

生成物 1

HCID 58997392(2R,4R)-4-(3-(2-Chloro-4-fluoro-benzoylamino)-phenylamino)-2-methyl-piperidine-1-carboxylic acid tert-butyl ester収率 23%

試薬・触媒・溶媒 2

HCID 887Methanol溶媒HCID 8028Tetrahydrofuran溶媒

実験手順

Dissolve N-(3-amino-phenyl)-2-chloro-4-fluoro-benzamide (Preparation 1,200 mg, 0.756 mmol) and (2R)-2-methyl-4-oxo-piperidine-1-carboxylic acid tert-butyl ester (161 mg, 0.756 mmol) in tetrahydrofuran (5 mL). Add acetic acid (52 μl, 0.907 mmol) and sodium triacetoxyborohydride (192 mg, 0.907 mmol) and stir at room temperature for 18 hr. Heat the reaction to 45° C. for 4 hr. Cool the reaction to room temperature and load onto an SCX column with methanol. Wash the column with methanol, flush with 2M ammonia in methanol, and concentrate in vacuo. Purify by column chromatography (20%–75% ethyl acetate/hexane) to yield 80 mg (23%) of the title compound: mass spectrum (ion spray): m/z=462.4 (M+1); 1H NMR: δ (CDCl3, ppm) 7.76 (m, 2H), 7.20 (m, 1H), 7.15 (m, 1H), 7.10 (m, 1H), 6.70 (d, J=7.6 Hz, 1H), 6.40 (d, J=8.4 Hz, 1H), 4.20 (m, 1H), 3.82 (m, 2H), 3.67 (bs, 1H), 3.20 (m, 1H), 2.00 (m, 2H), 1.65 (m, 2H), 1.47 (s, 9H), 1.27, (m, 4H).

後処理

  1. temperatureHeat
  2. customthe reaction to 45° C. for 4 hr
  3. temperatureCool
  4. customthe reaction to room temperature
  5. washWash the column with methanol
  6. customflush with 2M ammonia in methanol
  7. concentrationconcentrate in vacuo
  8. customPurify by column chromatography (20%–75% ethyl acetate/hexane)

出典と根拠

ORDレコード
ord-e76bda23c753452a85810bd22ec0f04c
出典データセット
uspto-grants-2007_11
特許番号
US07291632B2

反応ノート

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