Potassium Carbonate → 3-(4-Methyl-3-oxo-7-phenyl-2,3,4,10-tetrahydro-9-oxa-1,2,4a-triaza-phenanthren-6-ylamino)-azetidine-1-carboxylic acid tert-butyl ester

HRID 518950

反応式

HRID 518950 の反応式
[C:1]([O:5][C:6]([N:8]1[CH2:11][CH:10]([NH:12][C:13]2[CH:14]=[C:15]3[C:24](=[CH:25][C:26]=2Br)[O:23][CH2:22][C:21]2[N:16]3[CH:17]([CH3:29])[C:18](=[O:28])[NH:19][N:20]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[C:30]1(B(O)O)[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1.C([O-])([O-])=O.[K+].[K+]>O1CCOCC1.O>[C:1]([O:5][C:6]([N:8]1[CH2:11][CH:10]([NH:12][C:13]2[CH:14]=[C:15]3[C:24](=[CH:25][C:26]=2[C:30]2[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=2)[O:23][CH2:22][C:21]2[N:16]3[CH:17]([CH3:29])[C:18](=[O:28])[NH:19][N:20]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

参加物

6

反応物 3

HCID 11430Potassium CarbonateHCID 66827Phenylboronic AcidHCID 867272933-(7-Bromo-4-methyl-3-oxo-2,3,4,10-tetrahydro-9-oxa-1,2,4a-triaza-phenanthren-6-ylamino)-azetidine-1-carboxylic acid tert-butyl ester

生成物 1

HCID 867272923-(4-Methyl-3-oxo-7-phenyl-2,3,4,10-tetrahydro-9-oxa-1,2,4a-triaza-phenanthren-6-ylamino)-azetidine-1-carboxylic acid tert-butyl ester収率 71.4%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 312751,4-Dioxane溶媒

反応条件

温度
110 °C

実験手順

A mixture of 3-(7-bromo-4-methyl-3-oxo-2,3,4,10-tetrahydro-9-oxa-1,2,4a-triaza-phenanthren-6-ylamino)-azetidine-1-carboxylic acid tert-butyl ester (1 g, 2.1 mmol), phenylboronic acid (0.79 g, 6.4 mmol), 1,1′-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (0.351 g, 0.43 mmol) and K2CO3 (0.890 g, 6.4 mmol) in dioxane (24 mL) and water (4 mL) was heated at 110° C. overnight. The reaction mixture was cooled to ambient temperature and the solvent was removed in vacuo to give the crude product, which was purified by column chromatography (eluting with 10-40% EtOAc in petroleum ether) to give 3-(4-methyl-3-oxo-7-phenyl-2,3,4,10-tetrahydro-9-oxa-1,2,4a-triaza-phenanthren-6-ylamino)-azetidine-1-carboxylic acid tert-butyl ester (0.710 g racemate, 1.5 mmol, 71%) as an off-white powder. The racemic material was further separated by chiral SFC (Table 2, Method 1) to give two isomers: 3-(4(R)-methyl-3-oxo-7-phenyl-2,3,4,10-tetrahydro-9-oxa-1,2,4a-triaza-phenanthren-6-ylamino)-azetidine-1-carboxylic acid tert-butyl ester (Enantiomer 1, SFC (Table 1, Method 1), Rt=3.374 min., 0.281 g, 0.61 mmol, 29%) and 3-(4(S)-methyl-3-oxo-7-phenyl-2,3,4,10-tetrahydro-9-oxa-1,2,4a-triaza-phenanthren-6-ylamino)-azetidine-1-carboxylic acid tert-butyl ester (Enantiomer 2, SFC (Table 1, Method 1), Rt=4.333 min., 0.252 g, 26%). LC/MS (Table 1, Method 2) Rt=1.25 min.; MS m/z: 464 [M+H]+.

後処理

  1. temperatureThe reaction mixture was cooled to ambient temperature
  2. customthe solvent was removed in vacuo
  3. customto give the crude product, which
  4. customwas purified by column chromatography (eluting with 10-40% EtOAc in petroleum ether)

出典と根拠

ORDレコード
ord-a9d0d348e53c483682393f2affa9375d
出典データセット
uspto-grants-2015_08
特許番号
US09115151B2

関連ノート

読み込み中…