Acetic Acid → 7-(1-Cyclopropylmethyl-piperidin-4-yloxy)-3,4-dihydro-2H-2,4a,5-triaza-fluoren-1-one

HRID 2105432ノート

反応式

HRID 2105432 の反応式
[NH:1]1[CH2:6][CH2:5][CH:4]([O:7][C:8]2[CH:20]=[C:19]3[C:11]([N:12]4[C:17](=[CH:18]3)[C:16](=[O:21])[NH:15][CH2:14][CH2:13]4)=[N:10][CH:9]=2)[CH2:3][CH2:2]1.O.[CH:23]1([CH:26]=O)[CH2:25][CH2:24]1.C(O)(=O)C.C([BH3-])#N.[Na+].C(=O)(O)[O-].[Na+]>O1CCCC1>[CH:23]1([CH2:26][N:1]2[CH2:2][CH2:3][CH:4]([O:7][C:8]3[CH:20]=[C:19]4[C:11]([N:12]5[C:17](=[CH:18]4)[C:16](=[O:21])[NH:15][CH2:14][CH2:13]5)=[N:10][CH:9]=3)[CH2:5][CH2:6]2)[CH2:25][CH2:24]1

参加物

8

反応物 6

HCID 176Acetic AcidHCID 962WaterHCID 123114CyclopropanecarboxaldehydeHCID 516892Sodium BicarbonateHCID 5003444Sodium cyanoborohydrideHCID 684660687-(piperidin-4-yloxy)-3,4-dihydro-2H-2,4a,5-triaza-fluoren-1-one

生成物 1

HCID 166791247-(1-Cyclopropylmethyl-piperidin-4-yloxy)-3,4-dihydro-2H-2,4a,5-triaza-fluoren-1-one収率 40%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

反応条件

温度
55 °C

実験手順

To a solution of 0.40 g (1.40 mmol) 7-(piperidin-4-yloxy)-3,4-dihydro-2H-2,4a,5-triaza-fluoren-1-one in 8 mL tetrahydrofuran, 30 μL (30 μg, 1.67 mmol) water, 0.16 mL (0.15 g, 2.11 mmol) cyclopropanecarboxaldehyde, 0.24 mL (0.25 g, 4.2 mmol) acetic acid and 2.1 mL (1.93 g, 2.1 mmol) sodium cyanoborohydride (1M solution in tetrahydrofuran) were added successively and the reaction mixture was stirred for 18 hours at 55° C. After cooling to room temperature the reaction was poured on 10% aqueous sodium bicarbonate solution and was extracted three times with ethyl acetate. The combined organic layers were washed with brine, dried over magnesium sulfate, filtered and evaporated. The residue was flash-chromatographed on silica gel with dichloromethane:methanol:ammonia (9:1:0.1 v/v) as eluant to give 0.19 g (40%) of the desired compound as a white solid.

後処理

  1. temperatureAfter cooling to room temperature the reaction
  2. extractionwas extracted three times with ethyl acetate
  3. washThe combined organic layers were washed with brine
  4. dry with materialdried over magnesium sulfate
  5. filtrationfiltered
  6. customevaporated
  7. customThe residue was flash-chromatographed on silica gel with dichloromethane:methanol:ammonia (9:1:0.1 v/v) as eluant

出典と根拠

ORDレコード
ord-ab3eb9f65e334c1b8f50501ad14e40f2
出典データセット
uspto-grants-2009_08
特許番号
US07579351B2

反応ノート

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