Acetic Acid → 8-(1-(cyclopropylmethyl)piperidin-4-yloxy)-3,4-dihydropyrazino[1,2-a]indol-1(2H)-one

HRID 506644ノート

反応式

HRID 506644 の反応式
[NH:1]1[CH2:6][CH2:5][CH:4]([O:7][C:8]2[CH:16]=[CH:15][C:14]3[N:13]4[CH2:17][CH2:18][NH:19][C:20](=[O:21])[C:12]4=[CH:11][C:10]=3[CH:9]=2)[CH2:3][CH2:2]1.[CH:22]1([CH:25]=O)[CH2:24][CH2:23]1.C(O)(=O)C.C([BH3-])#N.[Na+].C(=O)(O)[O-].[Na+]>O1CCCC1.O>[CH:22]1([CH2:25][N:1]2[CH2:2][CH2:3][CH:4]([O:7][C:8]3[CH:16]=[CH:15][C:14]4[N:13]5[CH2:17][CH2:18][NH:19][C:20](=[O:21])[C:12]5=[CH:11][C:10]=4[CH:9]=3)[CH2:5][CH2:6]2)[CH2:24][CH2:23]1

参加物

8

反応物 5

HCID 176Acetic AcidHCID 123114CyclopropanecarboxaldehydeHCID 516892Sodium BicarbonateHCID 5003444Sodium cyanoborohydrideHCID 684610838-(Piperidin-4-yloxy)-3,4-dihydro-2H-pyrazino[1,2-a]indol-1-one

生成物 1

HCID 166795208-(1-(cyclopropylmethyl)piperidin-4-yloxy)-3,4-dihydropyrazino[1,2-a]indol-1(2H)-one収率 30%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 8028Tetrahydrofuran溶媒

反応条件

温度
55 °C

実験手順

To the solution of 0.27 g (0.95 mmol) 8-(piperidin-4-yloxy)-3,4-dihydro-2H-pyrazino[1,2-a]indol-1-one in 6 mL tetrahydrofuran, 20 μL water, 11 μL (99 μg, 1.42 mmol) cyclopropanecarboxaldehyde, 0.16 mL (0.17 g, 2.8 mmol) acetic acid and 1.42 mL (1.42 mmol, 1M solution in tetrahydrofuran) sodium cyanoborohydride were added and the reaction mixture was stirred for 18 hours at 55° C. The mixture was poured on 10% aqueous sodium bicarbonate 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 96 μg (30%) of the desired compound as a white solid.

後処理

  1. extractionwas extracted three times with ethyl acetate
  2. washThe combined organic layers were washed with brine
  3. dry with materialdried over magnesium sulfate
  4. filtrationfiltered
  5. customevaporated
  6. 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-1f92fa6bbe804a9c918f00bda966e38f
出典データセット
uspto-grants-2010_08
特許番号
US07786109B2

反応ノート

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