Pyridine → N-(2-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-4,5,6,7-tetrahydrobenzo[b]thiophene-2-carboxamide

HRID 888428

反応式

HRID 888428 の反応式
[CH3:1][C:2]1[C:7]([B:8]2[O:12][C:11]([CH3:14])([CH3:13])[C:10]([CH3:16])([CH3:15])[O:9]2)=[CH:6][CH:5]=[CH:4][C:3]=1[NH2:17].N1C=CC=CC=1.[S:24]1[C:28]([C:29](Cl)=[O:30])=[CH:27][C:26]2[CH2:32][CH2:33][CH2:34][CH2:35][C:25]1=2>C(Cl)Cl>[CH3:1][C:2]1[C:7]([B:8]2[O:12][C:11]([CH3:13])([CH3:14])[C:10]([CH3:16])([CH3:15])[O:9]2)=[CH:6][CH:5]=[CH:4][C:3]=1[NH:17][C:29]([C:28]1[S:24][C:25]2[CH2:35][CH2:34][CH2:33][CH2:32][C:26]=2[CH:27]=1)=[O:30]

参加物

5

反応物 3

HCID 1049PyridineHCID 64853624,5,6,7-Tetrahydro-benzo[b]thiophene-2-carbonyl chlorideHCID 467380052-Methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline

生成物 1

HCID 58729134N-(2-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-4,5,6,7-tetrahydrobenzo[b]thiophene-2-carboxamide収率 91.2%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

2-Methyl-3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenylamine (7) (1.20 g, 5.16 mmol, 1.0 equiv) and pyridine (0.42 mL, 25.8 mmol) are dissolved in DCM (40 mL) at 0° C. under a nitrogen atmosphere. 4,5,6,7-Tetrahydro-benzo[b]thiophene-2-carbonyl chloride (8) (1.03 g, 5.16 mmol) is then added in portions over 5 min and allowed to react warming to RT over 60 min. All solvent is then removed under reduced pressure, and the resultant oil is reduced from toluene (3×20 mL) to remove residual pyridine. The residue is then dissolved in ethyl acetate and washed with sodium hydroxide (1N, 1×100 mL), then washed with saturated sodium chloride (1×100 mL) and dried over sodium sulfate. The solution is then filtered and concentrated under reduced pressure to give 4,5,6,7-tetrahydro-benzo[b]thiophene-2-carboxylic acid [2-methyl-3-(4,4,5,5-tetramethyl-[1,3,2]diaxaborolan-2-yl)-phenyl]-amide (9) as an off-white solid (1.87 g).

後処理

  1. customto react
  2. customAll solvent is then removed under reduced pressure
  3. customto remove residual pyridine
  4. dissolutionThe residue is then dissolved in ethyl acetate
  5. washwashed with sodium hydroxide (1N, 1×100 mL)
  6. washwashed with saturated sodium chloride (1×100 mL)
  7. dry with materialdried over sodium sulfate
  8. filtrationThe solution is then filtered
  9. concentrationconcentrated under reduced pressure

出典と根拠

ORDレコード
ord-5a08ce3daf9b445f80492ad19929f23c
出典データセット
uspto-grants-2012_08
特許番号
US08247550B2

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