Potassium tert-butoxide → tert-butyl 2-(8-(benzo[d]thiazol-2-yl((2-(trimethylsilyl)ethoxy)methyl)carbamoyl)-3,4-dihydroisoquinolin-2(1H)-yl)thiazole-4-carboxylate

HRID 1518302ノート

反応式

HRID 1518302 の反応式
[S:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[N:10]([CH2:32][O:33][CH2:34][CH2:35][Si:36]([CH3:39])([CH3:38])[CH3:37])[C:11]([C:13]1[CH:14]=[CH:15][CH:16]=[C:17]2[C:22]=1[CH2:21][N:20]([C:23]1[S:24][CH:25]=[C:26]([C:28](OC)=[O:29])[N:27]=1)[CH2:19][CH2:18]2)=[O:12].[CH3:40][C:41]([O-:44])([CH3:43])[CH3:42].[K+]>C(OC(C)(C)C)(=O)C.C1COCC1>[S:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[N:10]([CH2:32][O:33][CH2:34][CH2:35][Si:36]([CH3:39])([CH3:38])[CH3:37])[C:11]([C:13]1[CH:14]=[CH:15][CH:16]=[C:17]2[C:22]=1[CH2:21][N:20]([C:23]1[S:24][CH:25]=[C:26]([C:28]([O:44][C:41]([CH3:43])([CH3:42])[CH3:40])=[O:29])[N:27]=1)[CH2:19][CH2:18]2)=[O:12]

参加物

5

反応物 2

HCID 23665647Potassium tert-butoxide2 回HCID 59447536HCID 59447536、化合物

生成物 1

HCID 59447538tert-butyl 2-(8-(benzo[d]thiazol-2-yl((2-(trimethylsilyl)ethoxy)methyl)carbamoyl)-3,4-dihydroisoquinolin-2(1H)-yl)thiazole-4-carboxylate

試薬・触媒・溶媒 2

HCID 8028Tetrahydrofuran溶媒HCID 10908tert-Butyl acetate溶媒

実験手順

To a stirring solution of methyl 2-(8-(benzo[d]thiazol-2-yl((2-(trimethylsilyl)ethoxy)methyl)carbamoyl)-3,4-dihydroisoquinolin-2(1H)-yl)thiazole-4-carboxylate (38A) (14 g, 24.1 mmol) in t-butyl acetate (200 mL) was added 2 mL of t-BuOK in THF (2M) under vacuum. 3×2 mL t-BuOK were added to the stirring solution under vacuum to drive the reaction to complete. The mixture was then acidified to neutrality and washed with water, brine, dried over Na2SO4, and concentrated under reduced pressure. The crude material was purified by column chromatography on silica gel eluting with 5% EtOAc in hexanes to provide 3.5 g of the desired product 38B: 1H NMR (300 MHz, CDCl3) δ ppm 8.29 (1H, m), 7.71 (1H, d), 7.62 (2H, m), 7.49 (2H, t), 7.34 (3H, m), 6.02 (2H, s), 5.20 (2H, s), 4.02 (2H, m), 3.71 (3H, m), 3.08 (2H, m), 1.59 (9H, t), 0.97 (2H, m), −0.09 (9H, m). MS (ESI(+)): m/z 623.0 (M+H).

後処理

  1. customthe reaction
  2. washwashed with water, brine
  3. dry with materialdried over Na2SO4
  4. concentrationconcentrated under reduced pressure
  5. customThe crude material was purified by column chromatography on silica gel eluting with 5% EtOAc in hexanes

出典と根拠

ORDレコード
ord-0f05c560488340f6bf5cb0437c559675
出典データセット
uspto-grants-2012_07
特許番号
US08232273B2

反応ノート

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