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Cesium carbonate → 6-(4-tert-Butyl-cyclohexyloxy)-3,4-dihydro-1H-isoquinoline-2-carboxylic acid tert-butyl ester

HRID 713985
ノート
印刷プレビュー

反応式

HRID 713985 の反応式
[C:1]([O:5][C:6]([N:8]1[CH2:17][CH2:16][C:15]2[C:10](=[CH:11][CH:12]=[C:13]([OH:18])[CH:14]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C(=O)([O-])[O-].[Cs+].[Cs+].[C:25]([CH:29]1[CH2:34][CH2:33][CH:32](OS(C)(=O)=O)[CH2:31][CH2:30]1)([CH3:28])([CH3:27])[CH3:26]>CC(O)(C)C.CC(=O)CC>[C:1]([O:5][C:6]([N:8]1[CH2:17][CH2:16][C:15]2[C:10](=[CH:11][CH:12]=[C:13]([O:18][CH:32]3[CH2:33][CH2:34][CH:29]([C:25]([CH3:28])([CH3:27])[CH3:26])[CH2:30][CH2:31]3)[CH:14]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

6

反応物 3

HCID 10796Cesium carbonateHCID 10060623tert-Butyl 6-hydroxy-3,4-dihydroisoquinoline-2(1H)-carboxylateHCID 11128255Methanesulfonic acid 4-tert-butyl-cyclohexyl ester

生成物 1

HCID 669267656-(4-tert-Butyl-cyclohexyloxy)-3,4-dihydro-1H-isoquinoline-2-carboxylic acid tert-butyl ester収率 58.6%

試薬・触媒・溶媒 2

HCID 6386
tert-Butanol
溶媒
HCID 6569Methyl Ethyl Ketone溶媒

反応条件

温度
100 °C

実験手順

A mixture of 6-hydroxy-3,4-dihydro-1H-isoquinoline-2-carboxylic acid tert-butyl ester (1.1 g, 4.4 mmol), cesium carbonate (4.3 g, 13 mmol), and methanesulfonic acid 4-tert-butyl-cyclohexyl ester (2.2 g, 8.8 mmol) in t-BuOH (12 mL) and 2-butanone (6.0 mL) was heated in a sealed vial at 100° C. overnight. The mixture was partitioned between water and ether. The organic phase was washed with water, dried over MgSO4, filtered and concentrated. The residue was purified via a silica gel column eluted with EtOAc in hexanes from 0 to 30% to give white precipitate (1.0 g, yield: 58%). 1H NMR (400 MHz, CDCl3) δ 6.99 (d, 1H), 6.74 (dd, 1H), 6.67 (d, 1H), 4.49 (s, 2H), 4.07 (m, 1H), 3.61 (s, 2H), 2.78 (m, 2H), 2.18 (d, 2H), 1.85 (d, 2H), 1.48 (s, 9H), 1.37 (m, 2H), 1.18-1.00 (m, 3H), 0.87 (s, 9H).

後処理

  1. customThe mixture was partitioned between water and ether
  2. washThe organic phase was washed with water
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue was purified via a silica gel column
  7. washeluted with EtOAc in hexanes from 0 to 30%

出典と根拠

ORDレコード
ord-989fa183e51a41beb13679109e17cc76
出典データセット
uspto-grants-2015_11
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US09186367B2

反応ノート

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このページの内容参加物反応条件実験手順後処理出典と根拠反応ノート