Triethylamine → tert-butyl 4-(2-(1-((2-(trimethylsilyl)ethoxy)carbonyl)piperidin-4-yloxy)benzo[d]thiazol-6-yl)-5,6-dihydropyridine-1(2H)-carboxylate

HRID 1429577ノート

反応式

HRID 1429577 の反応式
[NH:1]1[CH2:6][CH2:5][CH:4]([O:7][C:8]2[S:9][C:10]3[CH:16]=[C:15]([C:17]4[CH2:22][CH2:21][N:20]([C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24])[CH2:19][CH:18]=4)[CH:14]=[CH:13][C:11]=3[N:12]=2)[CH2:3][CH2:2]1.CCN(CC)CC.[C:37](=O)([O:46][CH2:47][CH2:48][Si:49]([CH3:52])([CH3:51])[CH3:50])[O:38]N1C(=O)CCC1=O>O1CCOCC1.C(Cl)Cl>[CH3:50][Si:49]([CH3:52])([CH3:51])[CH2:48][CH2:47][O:46][C:37]([N:1]1[CH2:6][CH2:5][CH:4]([O:7][C:8]2[S:9][C:10]3[CH:16]=[C:15]([C:17]4[CH2:22][CH2:21][N:20]([C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24])[CH2:19][CH:18]=4)[CH:14]=[CH:13][C:11]=3[N:12]=2)[CH2:3][CH2:2]1)=[O:38]

参加物

6

反応物 3

HCID 8471TriethylamineHCID 50183862,5-Dioxopyrrolidin-1-yl 2-(trimethylsilyl)ethyl carbonateHCID 67468425tert-butyl 4-(2-(piperidin-4-yloxy)benzo[d]thiazol-6-yl)-5,6-dihydropyridine-1(2H)-carboxylate

生成物 1

HCID 67464645tert-butyl 4-(2-(1-((2-(trimethylsilyl)ethoxy)carbonyl)piperidin-4-yloxy)benzo[d]thiazol-6-yl)-5,6-dihydropyridine-1(2H)-carboxylate収率 92%

試薬・触媒・溶媒 2

HCID 6344Dichloromethane溶媒HCID 312751,4-Dioxane溶媒

実験手順

To a solution of tert-butyl 4-(2-(piperidin-4-yloxy)benzo[d]thiazol-6-yl)-5,6-dihydropyridine-1(2H)-carboxylate (450 mg, 1.083 mmol) in dioxane (10 mL) was added Et3N (0.45 mL, 3.25 mmol) followed by 2,5-dioxopyrrolidin-1-yl 2-(trimethylsilyl)ethyl carbonate (281 mg, 1.083 mmol). The reaction mixture was stirred at rt overnight. The reaction mixture was diluted with CH2Cl2 (30 mL), washed with water (30 mL) and brine. The organic layer was dried (Na2SO4), filtered, and concentrated. The residue was purified by column chromatography (silica gel, hexanes-EtOAc gradient 0 to 35% EtOAc) to afford tert-butyl 4-(2-(1-((2-(trimethylsilyl)ethoxy)carbonyl)piperidin-4-yloxy)benzo[d]thiazol-6-yl)-5,6-dihydropyridine-1(2H)-carboxylate (555 mg, 0.991 mmol, 92% yield) as a white solid. LCMS (m/z)=560 (M+H)+.

後処理

  1. washwashed with water (30 mL) and brine
  2. dry with materialThe organic layer was dried (Na2SO4)
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customThe residue was purified by column chromatography (silica gel, hexanes-EtOAc gradient 0 to 35% EtOAc)

出典と根拠

ORDレコード
ord-5cf561b477c443efa4525e685c0314c5
出典データセット
uspto-grants-2015_01
特許番号
US08940716B2

反応ノート

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