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Methyl iodide → (2S,4R)-2-methyl 1-(2-(trimethylsilyl)ethyl) 4-(5'-chloro-2'-vinylbiphenyl-4-yl)-4-methoxypyrrolidine-1,2-dicarboxylate

HRID 1043427
ノート
印刷プレビュー

反応式

HRID 1043427 の反応式
[H-].[Na+].[Cl:3][C:4]1[CH:5]=[CH:6][C:7]([CH:35]=[CH2:36])=[C:8]([C:10]2[CH:15]=[CH:14][C:13]([C@@:16]3([OH:34])[CH2:20][N:19]([C:21]([O:23][CH2:24][CH2:25][Si:26]([CH3:29])([CH3:28])[CH3:27])=[O:22])[C@H:18]([C:30]([O:32][CH3:33])=[O:31])[CH2:17]3)=[CH:12][CH:11]=2)[CH:9]=1.[CH3:37]I>CN(C=O)C>[Cl:3][C:4]1[CH:5]=[CH:6][C:7]([CH:35]=[CH2:36])=[C:8]([C:10]2[CH:11]=[CH:12][C:13]([C@@:16]3([O:34][CH3:37])[CH2:20][N:19]([C:21]([O:23][CH2:24][CH2:25][Si:26]([CH3:29])([CH3:27])[CH3:28])=[O:22])[C@H:18]([C:30]([O:32][CH3:33])=[O:31])[CH2:17]3)=[CH:14][CH:15]=2)[CH:9]=1
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 3

HCID 6328Methyl iodideHCID 24758Sodium hydrideHCID 59266523(2S,4R)-2-methyl 1-(2-(trimethylsilyl)ethyl) 4-(5'-chloro-2'-vinylbiphenyl-4-yl)-4-hydroxypyrrolidine-1,2-dicarboxylate

生成物 1

HCID 59266494(2S,4R)-2-methyl 1-(2-(trimethylsilyl)ethyl) 4-(5'-chloro-2'-vinylbiphenyl-4-yl)-4-methoxypyrrolidine-1,2-dicarboxylate収率 44%

試薬・触媒・溶媒 1

HCID 6228
Dimethylformamide
溶媒

実験手順

NaH (60% in oil) (106 mg, 2.65 mmol) was added to a solution of (2S,4R)-2-methyl 1-(2-(trimethylsilyl)ethyl) 4-(5′-chloro-2′-vinylbiphenyl-4-yl)-4-hydroxypyrrolidine-1,2-dicarboxylate (740 mg, 1.474 mmol) and methyl iodide (0.166 mL, 2.65 mmol) at 0° C. in DMF and stirred at this temperature and allowed to warm up to r.t. overnight. The reaction was then quenched with saturated NH4Cl solution and ether. The ether layer was washed with brine, dried, filtered and evaporated to give crude material. The crude material was purified by flash chromatography on the Biotage (5-40% EtOAc in hexanes) to give semi purified product (2S,4R)-2-methyl 1-(2-(trimethylsilyl)ethyl) 4-(5′-chloro-2′-vinylbiphenyl-4-yl)-4-methoxypyrrolidine-1,2-dicarboxylate (333 mg, 0.645 mmol, 44% yield) as a clear oil. 1H NMR (500 MHz, CHLOROFORM-d) δ ppm 0.04 (s, 9H) 1.01-1.06 (m, 2H) 2.52 (dd, J=13.12, 8.85 Hz, 1H) 2.78-2.87 (m, 1H) 2.97 (d, J=5.19 Hz, 3H) 3.65 (s, 1H) 3.67-3.75 (m, 3H) 3.77 (d, J=8.85 Hz, 3H) 3.96-4.08 (m, 1H) 5.21 (d, J=10.99 Hz, 1H) 5.68 (d, J=17.40 Hz, 1H) 6.59 (ddd, J=17.47, 11.06, 2.29 Hz, 1H) 7.26 (d, J=2.14 Hz, 1H) 7.29-7.35 (m, 3H) 7.35-7.40 (m, 2H) 7.56 (d, J=8.24 Hz, 1H).

後処理

  1. customThe reaction was then quenched with saturated NH4Cl solution and ether
  2. washThe ether layer was washed with brine
  3. customdried
  4. filtrationfiltered
  5. customevaporated
  6. customto give crude material
  7. customThe crude material was purified by flash chromatography on the Biotage (5-40% EtOAc in hexanes)
  8. customto give semi

出典と根拠

ORDレコード
ord-a5f8e043ae0c48d49e29e15adfae6059
出典データセット
uspto-grants-2013_10
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08563505B2

反応ノート

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