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Chlorotrimethylsilane → HCID 71520077、化合物

HRID 633663
ノート
印刷プレビュー

反応式

HRID 633663 の反応式
C1COCC1.[CH3:6][O:7][C:8]1[C@:15]2([CH2:18][CH:19]=[C:20]([CH3:22])[CH3:21])[C:16](=[O:17])[C@@H:11]([C@:12]([CH3:42])([CH2:28][CH2:29][CH2:30][C:31]([CH3:41])([O:33][Si:34]([CH2:39][CH3:40])([CH2:37][CH3:38])[CH2:35][CH3:36])[CH3:32])[C@@H:13]([CH2:23][CH:24]=[C:25]([CH3:27])[CH3:26])[CH2:14]2)[C:10](=[O:43])[CH:9]=1.Cl[Si:45]([CH3:48])([CH3:47])[CH3:46].[Li]N1C(C)(C)CCCC1(C)C>CCOC(C)=O.CCCCCC>[CH3:6][O:7][C:8]1[C@:15]2([CH2:18][CH:19]=[C:20]([CH3:22])[CH3:21])[C:16](=[O:17])[C@@H:11]([C@:12]([CH3:42])([CH2:28][CH2:29][CH2:30][C:31]([CH3:41])([O:33][Si:34]([CH2:37][CH3:38])([CH2:35][CH3:36])[CH2:39][CH3:40])[CH3:32])[C@@H:13]([CH2:23][CH:24]=[C:25]([CH3:27])[CH3:26])[CH2:14]2)[C:10](=[O:43])[C:9]=1[Si:45]([CH3:48])([CH3:47])[CH3:46]
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

7

反応物 4

HCID 6397ChlorotrimethylsilaneHCID 8028Tetrahydrofuran2 回HCID 71499447HCID 71499447、化合物HCID 178418821HCID 178418821、化合物

生成物 1

HCID 71520077HCID 71520077、化合物収率 90.2%

試薬・触媒・溶媒 2

HCID 8058
Hexane
溶媒
HCID 8857Ethyl Acetate溶媒

反応条件

温度
0 °C

実験手順

A THF (1 mL) solution of 44 (22.9 mg, 42.0 μmol, 1 equiv.) was cooled to −78° C. in a 10-mL test tube, and chlorotrimethylsilane (53 μL, 0.42 mmol, 10 equiv.) and a freshly prepared THF solution of lithium tetramethylpiperidide (0.50 M, 420 μL, 0.21 mmol, 5 equiv.) were sequentially added. The golden yellow solution was slowly warmed to 0° C. over 1 h and quenched at 0° C. with saturated aqueous NaHCO3. The mixture was warmed to room temperature and extracted thrice with EtOAc. The organic extracts were combined, washed with H2O and brine, dried over Na2SO4, filtered, and concentrated in vacuo to a yellow oil. Flash column chromatography (20 mL SiO2, 98:2 hexane:EtOAc) afforded 23.4 mg (37.9 μmol, 90% yield) of 45 as a colorless oil. TLC Rf 0.40 (95:5 hexane:EtOAc). 1H NMR (600 MHz; CDCl3): δ 5.02-4.97 (m, 2H), 3.83 (s, 3H), 3.11 (s, 1H), 2.51 (dd, J=14.4, 6.3 Hz, 1H), 2.37 (dd, J=14.5, 7.5 Hz, 1H), 2.15-2.11 (m, 1H), 1.99 (dd, J=14.0, 3.7 Hz, 1H), 1.69 (s, 3H), 1.68-1.63 (m, 9H), 1.57 (s, 3H), 1.48 (td, J=12.7, 3.9 Hz, 1H), 1.46-1.37 (m, 2H), 1.30 (td, J=12.2, 4.1 Hz, 1H), 1.26-1.24 (m, 1H), 1.21 (s, 3H), 1.21 (s, 3H), 1.14 (td, J=12.6, 4.2 Hz, 1H), 0.94 (t, J=7.9 Hz, 9H), 0.80 (s, 3H), 0.57 (q, J=8.1 Hz, 6H), 0.23 (s, 9H). 13C NMR (126 MHz; CDCl3): δ 207.9, 198.6, 185.7, 133.70, 133.59, 127.7, 122.8, 120.0, 73.7, 72.6, 64.1, 59.7, 46.7, 45.7, 41.8, 39.29, 39.27, 30.6, 30.0, 29.7, 27.6, 26.02, 25.97, 18.21, 18.14, 17.88, 17.83, 7.4, 7.0, 0.8. HRMS-ESI (m/z): [M+H]+ calculated for C36H64O4Si2, 617.4416. found, 617.4395.

後処理

  1. customquenched at 0° C. with saturated aqueous NaHCO3
  2. temperatureThe mixture was warmed to room temperature
  3. extractionextracted thrice with EtOAc
  4. washwashed with H2O and brine
  5. dry with materialdried over Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo to a yellow oil

出典と根拠

ORDレコード
ord-4e136f600d114db5a39e164def4dcd16
出典データセット
uspto-grants-2016_04
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US09321713B2

反応ノート

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