2-Methyl-3-butyn-2-ol → 9-(3-Hydroxy-3-methyl-but-1-ynyl)-4-oxo-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid methyl ester

HRID 575116ノート

反応式

HRID 575116 の反応式
[CH3:1][O:2][C:3]([C:5]1[S:6][C:7]2[C:8](=[O:20])[CH2:9][O:10][C:11]3[CH:18]=[CH:17][C:16](Br)=[CH:15][C:12]=3[C:13]=2[N:14]=1)=[O:4].[CH3:21][C:22]([OH:26])([C:24]#[CH:25])[CH3:23].C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>CCN(CC)CC.CC([O-])=O.CC([O-])=O.[Pd+2].[Cu]I>[CH3:1][O:2][C:3]([C:5]1[S:6][C:7]2[C:8](=[O:20])[CH2:9][O:10][C:11]3[CH:18]=[CH:17][C:16]([C:25]#[C:24][C:22]([OH:26])([CH3:23])[CH3:21])=[CH:15][C:12]=3[C:13]=2[N:14]=1)=[O:4]

参加物

7

反応物 3

HCID 82582-Methyl-3-butyn-2-olHCID 11776TriphenylphosphineHCID 866930859-Bromo-4-oxo-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid methyl ester

生成物 1

HCID 866931459-(3-Hydroxy-3-methyl-but-1-ynyl)-4-oxo-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid methyl ester収率 40.1%

試薬・触媒・溶媒 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)触媒HCID 167845palladium(II) acetate触媒HCID 8471Triethylamine溶媒

反応条件

温度
80 °C

実験手順

A mixture of 9-Bromo-4-oxo-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid methyl ester (200 mg, 0.565 mmol), 2-methyl-3-butyn-2-ol (237 mg, 2.825 mmol), Pd(OAc)2 (13 mg, 0.0565 mmol), CuI (21 mg, 0.113 mmol) and PPh3 (45 mg, 0.17 mmol) in Et3N (10 mL) was degassed with N2, and the mixture was stirred at 80° C. overnight. The reaction was cooled to room temperature, concentrated and purified by flash column chromatography (silica gel, EtOAc in hexane from 0 to 30%) to give 9-(3-Hydroxy-3-methyl-but-1-ynyl)-4-oxo-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid methyl ester as an off-white solid (81 mg, 40%). LC-MS (ESI & APCI): 358.2 (M+1).

後処理

  1. customwas degassed with N2
  2. temperatureThe reaction was cooled to room temperature
  3. concentrationconcentrated
  4. custompurified by flash column chromatography (silica gel, EtOAc in hexane from 0 to 30%)

出典と根拠

ORDレコード
ord-af41cc050d324ef6a3c77fc43b5e3380
出典データセット
uspto-grants-2015_05
特許番号
US09034866B2

反応ノート

読み込み中…