1,3-Dibromo-5,5-dimethylhydantoin → 5-Bromo-1,4-dimethyl-6-hexadecyl-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine

HRID 60400ノート

反応式

HRID 60400 の反応式
[CH3:1][N:2]1[C:6]2=[N:7][C:8]([CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH3:27])=[CH:9][C:10]([CH3:11])=[C:5]2[CH2:4][CH2:3]1.[Br:28]N1C(C)(C)C(=O)N(Br)C1=O>C(Cl)(Cl)Cl>[Br:28][C:9]1[C:10]([CH3:11])=[C:5]2[CH2:4][CH2:3][N:2]([CH3:1])[C:6]2=[N:7][C:8]=1[CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH3:27]

参加物

4

反応物 2

HCID 64791,3-Dibromo-5,5-dimethylhydantoinHCID 716778991,4-Dimethyl-6-hexadecyl-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine

生成物 1

HCID 716780615-Bromo-1,4-dimethyl-6-hexadecyl-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine

試薬・触媒・溶媒 1

HCID 6212Chloroform溶媒

反応条件

温度
0 °C

実験手順

To a solution of 278 mg (0.75 mmol) of 1,4-dimethyl-6-hexadecyl-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine in 4 mL of chloroform was added 108 mg (0.38 mmol) of 1,3-dibromo-5,5-dimethylhydantoin in portions at 0° C. The reaction mixture was stirred at 0° C. for 30 min. The reaction was quenched by the addition of 5 mL of sat aq NaHCO3. The mixture was extracted with chloroform and the combined organic layer was washed with brine and dried over MgSO4. The concentrated residue was purified by flash chromatography on a silica gel column (20 1.7 cm). Elution with 100:1 hexanes/ethyl acetate gave the product as a white solid: yield 331 mg (98%); nip 49-50° C.; silica gel TLC Rf 0.78 (8:1:1 hexanes/ethyl acetate/methanol); 1H NMR (CDCl3) δ 0.88 (t, 3H, J=7.2 Hz), 1.25-1.31 (m, 28H), 1.66 (quint, 2H, J=7.6 Hz), 2.08 (s, 3H), 2.55 (t, 2H, j=8.0 Hz), 2.80 (t, 2H, J=8.4 Hz), 2.90 (s, 3H), 3.38 (t, 2H, J=8.0 Hz) and 6.13 (s, 1H); 13C NMR (CDCl3), δ 14.1, 19.5, 22.7, 25.2, 28.7, 29.4, 29.57, 29.61, 29.65, 29.68, 29.71, 29.71, 29.71, 29.71, 29.71, 29.71, 31.9, 33.0, 38.1, 52.4, 110.9, 120.3, 141.1, 156.8 and 161.8; mass spectrum, m/z 451.3 and 453.2 (M+H)+ (theoretical 451.3 and 453.3); mass spectrum (APCI), m/z 451.2680 and 453.2697 (M+H)+ (C25H44N2Br requires 451.2688 and 453.2667).

後処理

  1. customThe reaction was quenched by the addition of 5 mL of sat aq NaHCO3
  2. extractionThe mixture was extracted with chloroform
  3. washthe combined organic layer was washed with brine
  4. dry with materialdried over MgSO4
  5. customThe concentrated residue was purified by flash chromatography on a silica gel column (20 1.7 cm)
  6. washElution with 100:1 hexanes/ethyl acetate

出典と根拠

ORDレコード
ord-85273a2637a7473badb926db5fa16366
出典データセット
uspto-grants-2016_09
特許番号
US09440967B2

反応ノート

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