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Cesium carbonate → 2-Amino-6-cyclopropylbenzonitrile

HRID 471777
ノート
印刷プレビュー

反応式

HRID 471777 の反応式
[NH2:1][C:2]1[CH:9]=[CH:8][CH:7]=[C:6](Br)[C:3]=1[C:4]#[N:5].C[C:12]1(C)[CH2:14][CH:13]1B(O)O.C([O-])([O-])=O.[Cs+].[Cs+]>COCCOC.O.C1(P([Pd-4](P(C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(P(C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)P(C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>[NH2:1][C:2]1[CH:9]=[CH:8][CH:7]=[C:6]([CH:12]2[CH2:14][CH2:13]2)[C:3]=1[C:4]#[N:5]
参加物実験手順後処理出典と根拠反応ノート

参加物

7

反応物 3

HCID 10796Cesium carbonateHCID 98130382-Amino-6-bromobenzonitrileHCID 57416253(2,2-Dimethylcyclopropyl)boronic acid

生成物 1

HCID 667472522-Amino-6-cyclopropylbenzonitrile収率 40,578.602%

試薬・触媒・溶媒 3

HCID 178420553HCID 178420553、化合物触媒
HCID 962
Water
溶媒
HCID 80711,2-Dimethoxyethane溶媒

実験手順

To a degassed solution of 2-amino-6-bromobenzonitrile (851 μmol, 168 mg), 2,2-dimethylcyclopropylboronic acid (1.106 μmol, 126 mg) (Example 270b), and Cs2CO3 (2.979 mmol, 970 mg) in DME (3.4 mL) and water (850 μL) was added tetrakis(triphenylphosphino)palladium(0) (43 μmol, 50 mg) under nitrogen and the reaction mixture microwaved for 2 hours at 160° C. The reaction mixture was cooled to room temperature and extracted with EtOAc (3×5 mL). The combined organic layers was washed once with brine (5 mL), dried over sodium sulfate, filtered and evaporated. The crude product was purified on silica gel (EtOAc/hexanes 10%-40%) to give the desired product (71 mg, 45%) as a waxy, yellow solid. 1H NMR (400 MHz, CDCl3) δ 0.82 (m, 1H), 0.82 (s, 3H), 0.85 (m, 1H), 1.33 (s, 3H), 1.92 (m, 1H), 4.36 (br. s, 2H), 6.47 (d, J=8 Hz, 1H), 6.56 (d, J=8 Hz, 1H), 7.20 (t, J=8 Hz, 1H).

後処理

  1. customthe reaction mixture microwaved for 2 hours at 160° C
  2. extractionextracted with EtOAc (3×5 mL)
  3. washThe combined organic layers was washed once with brine (5 mL)
  4. dry with materialdried over sodium sulfate
  5. filtrationfiltered
  6. customevaporated
  7. customThe crude product was purified on silica gel (EtOAc/hexanes 10%-40%)

出典と根拠

ORDレコード
ord-c0397a059b544b63abb044a6698163eb
出典データセット
uspto-grants-2014_01
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08633186B2

反応ノート

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