Hydrochloric Acid → 4-({[tert-Butyl(diphenyl)silyl]oxy}methyl)-2-(piperidin-4-yloxy)-6-(trifluoromethyl)pyridine

HRID 717871ノート

反応式

HRID 717871 の反応式
[Si:1]([O:18][CH2:19][C:20]1[CH:25]=[C:24]([C:26]([F:29])([F:28])[F:27])[N:23]=[C:22]([O:30][CH:31]2[CH2:36][CH2:35][N:34](C(OC(C)(C)C)=O)[CH2:33][CH2:32]2)[CH:21]=1)([C:14]([CH3:17])([CH3:16])[CH3:15])([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.Cl>O1CCOCC1.O.C(=O)(O)[O-].[Na+]>[Si:1]([O:18][CH2:19][C:20]1[CH:25]=[C:24]([C:26]([F:29])([F:28])[F:27])[N:23]=[C:22]([O:30][CH:31]2[CH2:32][CH2:33][NH:34][CH2:35][CH2:36]2)[CH:21]=1)([C:14]([CH3:16])([CH3:15])[CH3:17])([C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1)[C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1

参加物

6

反応物 2

HCID 313Hydrochloric Acid2 回HCID 69673501tert-Butyl 4-{[4-({[tert-butyl(diphenyl)silyl]oxy}methyl)-6-(trifluoromethyl)pyridin-2-yl]oxy}piperidine-1-carboxylate

生成物 1

HCID 696736304-({[tert-Butyl(diphenyl)silyl]oxy}methyl)-2-(piperidin-4-yloxy)-6-(trifluoromethyl)pyridine

試薬・触媒・溶媒 3

HCID 962Water溶媒HCID 312751,4-Dioxane溶媒3 回HCID 516892Sodium Bicarbonate溶媒

実験手順

To a solution of tert-butyl 4-{[4-({[tert-butyl(diphenyl)silyl]oxy}methyl)-6-(trifluoromethyl)pyridin-2-yl]oxy}piperidine-1-carboxylate (0.19 g, 0.23 mmol, from Step C) in 1,4-dioxane (2.0 mL) was added 4.0 M hydrogen chloride in dioxane (0.50 mL, 2.0 mmol). The reaction mixture was stirred for one hour. Additional 4.0 M hydrogen chloride in dioxane (0.50 mL, 2.0 mmol) was added and stirring was continued for two hours. The mixture was diluted with water, saturated sodium bicarbonate was used to adjust the pH to between 7 and 8, and then the product was extracted with two portions of DCM. The combined extracts were washed with brine, dried over sodium sulfate, filtered and concentrated. Flash chromatography on silica gel, eluting with a gradient from 0-15% MeOH in DCM afforded product as an oil (62 mg, 52%). 1H NMR (400 MHz, CDCl3) δ 7.69-7.62 (m, 4H), 7.48-7.34 (m, 6H), 7.14-7.11 (m, 1H), 6.91 (s, 1H), 5.17 (tt, J=8.7, 4.0 Hz, 1H), 4.71 (s, 2H), 3.13 (dt, J=12.7, 4.5 Hz, 2H), 2.78 (ddd, J=12.7, 9.7, 3.0 Hz, 2H), 2.07 (dq, J=12.2, 4.1 Hz, 2H), 1.67 (dtd, J=13.0, 9.4, 3.9 Hz, 2H), 1.11 (s, 9H); LCMS (M+H)+: 515.2.

後処理

  1. stirringstirring
  2. waitwas continued for two hours
  3. extractionthe product was extracted with two portions of DCM
  4. washThe combined extracts were washed with brine
  5. dry with materialdried over sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated
  8. washFlash chromatography on silica gel, eluting with a gradient from 0-15% MeOH in DCM afforded product as an oil (62 mg, 52%)

出典と根拠

ORDレコード
ord-6ee84e350e9f4355a70250b49030b6dc
出典データセット
uspto-grants-2015_11
特許番号
US09193733B2

反応ノート

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