Diisopropylethylamine → HCID 89726475、化合物

HRID 1777728ノート

反応式

HRID 1777728 の反応式
Br[C:2]1[S:6][CH:5]=[N:4][C:3]=1[C:7]([O:9][CH3:10])=[O:8].[C:11]([N:18]1[CH2:23][CH2:22][NH:21][CH2:20][C@H:19]1[CH3:24])([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12].CCN(C(C)C)C(C)C>CN1C(=O)CCC1.CC(=O)OCC>[C:14]([O:13][C:11]([N:18]1[CH2:23][CH2:22][N:21]([C:2]2[S:6][CH:5]=[N:4][C:3]=2[C:7]([O:9][CH3:10])=[O:8])[CH2:20][C@H:19]1[CH3:24])=[O:12])([CH3:17])([CH3:15])[CH3:16]

参加物

6

反応物 3

HCID 81531DiisopropylethylamineHCID 10262201tert-Butyl (2R)-2-methylpiperazine-1-carboxylateHCID 40787018Methyl 5-bromo-1,3-thiazole-4-carboxylate

生成物 1

HCID 89726475HCID 89726475、化合物収率 30.8%

試薬・触媒・溶媒 2

HCID 8857Ethyl Acetate溶媒HCID 13387N-methyl-2-pyrrolidone溶媒

反応条件

温度
120 °C

実験手順

To a solution of methyl 5-bromo-1,3-thiazole-4-carboxylate (3 g) in NMP (30 mL) was added (R)-1-N-Boc-2-methylpiperazine (2.76 g) followed by DIPEA (10.1 mL). The resulting solution was stirred at 120° C. for 1.5 d, at RT over weekend and at 120° C. for 7 h. After cooling down, the reaction mixture was diluted with EA and washed with sat. aq. NaHCO3, 1M HCl and sat. aq NaCl. The aq. phases were extracted with EA. The combined org. layers were dried over Na2SO4, filtrated off and evaporated in vacuo. The crude was purified by CC (Biotage, SNAP 100 g cartridge, solvent A: Hept; solvent B: EA; gradient in % B: 0 for 10CV, 0 to 10 over 5CV, 10 for 5CV, 10 to 20 over 5CV, 20 for 5CV, 20 to 30 over 5CV, 30 for 5CV) to afford 1.42 g of yellow oil. LC-MS (B): tR=0.84 min; [M+H]+: 342.08.

後処理

  1. temperatureAfter cooling down
  2. washwashed with sat. aq. NaHCO3, 1M HCl and sat. aq NaCl
  3. extractionThe aq. phases were extracted with EA
  4. dry with materiallayers were dried over Na2SO4
  5. filtrationfiltrated off
  6. customevaporated in vacuo
  7. customThe crude was purified by CC (Biotage, SNAP 100 g cartridge, solvent A: Hept; solvent B: EA; gradient in % B: 0 for 10CV, 0 to 10 over 5CV, 10 for 5CV, 10 to 20 over 5CV, 20 for 5CV, 20 to 30 over 5CV, 30 for 5CV)

出典と根拠

ORDレコード
ord-076e2cae0c914f1b89abd6e200a6f4b8
出典データセット
uspto-grants-2016_02
特許番号
US09266876B2

反応ノート

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