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

HRID 575120ノート

反応式

HRID 575120 の反応式
[CH3:1][O:2][C:3]([C:5]1[S:6][C:7]2[C:8]([OH:21])([CH3:20])[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].[CH3:22][C:23]([OH:27])([C:25]#[CH:26])[CH3:24].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]([OH:21])([CH3:20])[CH2:9][O:10][C:11]3[CH:18]=[CH:17][C:16]([C:26]#[C:25][C:23]([OH:27])([CH3:24])[CH3:22])=[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 866931469-Bromo-4-hydroxy-4-methyl-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid methyl ester

生成物 1

HCID 866931474-Hydroxy-9-(3-hydroxy-3-methyl-but-1-ynyl)-4-methyl-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid methyl ester収率 80.3%

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-hydroxy-4-methyl-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid methyl ester (387 mg, 1.04 mmol), 2-methyl-3-butyn-2-ol (699 mg, 8.32 mmol), Pd(OAc)2 (23 mg, 0.104 mmol), CuI (39 mg, 0.208 mmol) and PPh3 (82 mg, 0.312 mmol) in Et3N (15 mL) was degassed with N2, and the mixture was stirred at 80° C. overnight. The reaction mixture was cooled to room temperature, concentrated and purified by flash column chromatography (silica gel, EtOAc in hexane from 0 to 50%) to give 4-Hydroxy-9-(3-hydroxy-3-methyl-but-1-ynyl)-4-methyl-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid methyl ester as a yellow solid (312 mg, 80%). LC-MS (ESI & APCI): 374.3 (M+1).

後処理

  1. customwas degassed with N2
  2. temperatureThe reaction mixture was cooled to room temperature
  3. concentrationconcentrated
  4. custompurified by flash column chromatography (silica gel, EtOAc in hexane from 0 to 50%)

出典と根拠

ORDレコード
ord-506bd4db4a4d4515b62656af6a0bea2e
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…