Water → 3,4-dichloro-5-methyl-N-[(3S,4R)-3-methylpiperidin-4-yl]-1H-pyrrole-2-carboxamide

HRID 655774ノート

反応式

HRID 655774 の反応式
[Cl:1][C:2]1[C:6]([Cl:7])=[C:5]([CH3:8])[NH:4][C:3]=1[C:9]([NH:11][C@@H:12]1[CH2:17][CH2:16][N:15](C(OC)=O)[CH2:14][C@@H:13]1[CH3:22])=[O:10].[OH-].[K+].O.NN.O>C(O)CO>[Cl:1][C:2]1[C:6]([Cl:7])=[C:5]([CH3:8])[NH:4][C:3]=1[C:9]([NH:11][C@@H:12]1[CH2:17][CH2:16][NH:15][CH2:14][C@@H:13]1[CH3:22])=[O:10]

参加物

6

反応物 4

HCID 962WaterHCID 14797Potassium HydroxideHCID 24654Hydrazine hydrate (1:1)HCID 59402510methyl (3S,4R)-4-{[(3,4-dichloro-5-methyl-1H-pyrrol-2-yl)carbonyl]amino}-3-methylpiperidine-1-carboxylate2 回

生成物 1

HCID 594024943,4-dichloro-5-methyl-N-[(3S,4R)-3-methylpiperidin-4-yl]-1H-pyrrole-2-carboxamide収率 63.4%

試薬・触媒・溶媒 1

HCID 174Ethylene Glycol溶媒

実験手順

A solution of methyl (3S,4R)-4-{[(3,4-dichloro-5-methyl-1H-pyrrol-2-yl)carbonyl]amino}-3-methylpiperidine-1-carboxylate (Intermediate 40, 3.4 g, 9.79 mmol), potassium hydroxide (3.84 g, 68.58 mmol), and hydrazine hydrate (3.6 mL, 68.58 mmol) in ethylene glycol (180 mL) was stirred for 60 h at 120° C. The reaction mixture was poured in to water (300 mL) and extracted with ethyl acetate (2×300 mL). The combined organic extracts were dried over anhydrous sodium sulphate, filtered, concentrated under vacuum to yield the crude product, which was triturated with water (150 mL) to afford 3,4-dichloro-5-methyl-N-[(3S,4R)-3-methylpiperidin-4-yl]-1H-pyrrole-2-carboxamide 1.8 g, (63%) as solid.

後処理

  1. extractionextracted with ethyl acetate (2×300 mL)
  2. dry with materialThe combined organic extracts were dried over anhydrous sodium sulphate
  3. filtrationfiltered
  4. concentrationconcentrated under vacuum
  5. customto yield the crude product, which
  6. customwas triturated with water (150 mL)

出典と根拠

ORDレコード
ord-9a232bc7258440e3b549e269849ab5b1
出典データセット
uspto-grants-2011_12
特許番号
US08071605B2

反応ノート

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