Cesium carbonate → HCID 59717866、化合物

HRID 2224686ノート

反応式

HRID 2224686 の反応式
[CH2:1]([O:3][C:4](=[O:15])[NH:5][CH2:6][CH2:7][C:8]1[CH:13]=[CH:12][C:11]([OH:14])=[CH:10][CH:9]=1)[CH3:2].F[C:17]1[CH:24]=[CH:23][C:20]([C:21]#[N:22])=[CH:19][CH:18]=1.C(=O)([O-])[O-].[Cs+].[Cs+]>CN(C)C=O>[CH2:1]([O:3][C:4](=[O:15])[NH:5][CH2:6][CH2:7][C:8]1[CH:9]=[CH:10][C:11]([O:14][C:17]2[CH:24]=[CH:23][C:20]([C:21]#[N:22])=[CH:19][CH:18]=2)=[CH:12][CH:13]=1)[CH3:2]

参加物

5

反応物 3

HCID 10796Cesium carbonateHCID 145174-FluorobenzonitrileHCID 2762412Ethyl N-[2-(4-hydroxyphenyl)ethyl]carbamate

生成物 1

HCID 59717866HCID 59717866、化合物収率 119.5%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

反応条件

温度
85 °C

実験手順

Combine 6.2 mmol of [2-(4-hydroxy-phenyl)-ethyl]-carbamic acid ethyl ester (3.6.0 g, 17.2 mmol), 4-fluorobenzonitrile (2.1 g, 17.2 mmol), cesium carbonate (11.2 g, 34.4 mmol), and N,N-dimethylformamide (80 mL), stir and heat at 85° C. for 18 hours. Cool to room temperature and evaporate on a rotary evaporator, took up residue in brine then extracted with ethyl acetate (3×50 mL). Dry the combined ethyl acetate extracts over sodium chloride/magnesium sulfate, filter, and concentrate on a rotary evaporator to yield the crude product (4.5 g). The crude product is purified by flash column chromatography on silica gel eluting with ethyl acetate and hexanes to yield {2-[4-(4-cyano-phenoxy)-phenyl]-ethyl}-carbamic acid ethyl ester (2.3 g): 1H NMR (CDCl3, 300.00 MHz): 7.66-7.60 (m, 2H), 7.31-7.24 (m, 2H), 7.07-7.00 (m, 4H), 4.72 (s, 1H), 4.16 (q, 2H, J=7.0 Hz), 3.48 (q, 2H, J=6.7 Hz), 2.86 (t, 2H, J=7.0 Hz), 1.27 (t, 3H, J=7.0 Hz). Step 3 {2-[4-(4-Acetyl-phenoxy)-phenyl]-ethyl}-carbamic acid ethyl ester

後処理

  1. temperatureCool to room temperature
  2. customevaporate on a rotary evaporator
  3. extractionthen extracted with ethyl acetate (3×50 mL)
  4. dry with materialDry the combined ethyl acetate
  5. filtrationfilter
  6. concentrationconcentrate on a rotary evaporator
  7. customto yield the crude product (4.5 g)
  8. customThe crude product is purified by flash column chromatography on silica gel eluting with ethyl acetate and hexanes

出典と根拠

ORDレコード
ord-5fcb0093fd274bf8b5afd58dd010a998
出典データセット
uspto-grants-2008_05
特許番号
US07378448B2

反応ノート

読み込み中…