Triethylamine → 4-Dipentylcarbamoyl-1-(2,2-diphenylacetyl)hexahydro-2-pyrazinecarboxylic acid

HRID 2226592

反応式

HRID 2226592 の反応式
[C:1]1([CH:7]([C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=2)[C:8]([N:10]2[CH2:15][CH2:14][NH:13][CH2:12][CH:11]2[C:16]([OH:18])=[O:17])=[O:9])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.C(N(CC)CC)C.[CH2:32]([N:37]([CH2:41][CH2:42][CH2:43][CH2:44][CH3:45])[C:38](Cl)=[O:39])[CH2:33][CH2:34][CH2:35][CH3:36]>C1COCC1>[CH2:41]([N:37]([CH2:32][CH2:33][CH2:34][CH2:35][CH3:36])[C:38]([N:13]1[CH2:14][CH2:15][N:10]([C:8](=[O:9])[CH:7]([C:1]2[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=2)[C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=2)[CH:11]([C:16]([OH:18])=[O:17])[CH2:12]1)=[O:39])[CH2:42][CH2:43][CH2:44][CH3:45]

参加物

5

反応物 3

HCID 8471TriethylamineHCID 18965159(+/-)-1-(Diphenylacetyl)-2-piperazinecarboxylic acidHCID 22106956Dipentylcarbamyl chloride

生成物 1

HCID 189651744-Dipentylcarbamoyl-1-(2,2-diphenylacetyl)hexahydro-2-pyrazinecarboxylic acid

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

反応条件

温度
0 °C

実験手順

A mixture of 79 mg (0.24 mmole) of (±)-1-(diphenylacetyl)piperazine-2-carboxylic acid (from Example 2, Step A) and 2 ml of THF was treated with 49 mg (0.48 mmole) of triethylamine to give a solution which was cooled to 0° C. With stirring a solution of 61 mg (0.25 mmole) of dipentylcarbamoyl chloride (from Step A) in 0.5 ml of THF was added and the solution was briefly warmed to 50° C. and then stirred at 25° C. for 16 hours. The resulting mixture was filtered and the filtrate was concentrated in vacuo to an oil which was dissolved in 0.5 ml of methanol and was chromatographed over an 85×0.9 cm. LH-20 column with 1.7 ml fractions of methanol. Fractions 21-25 were combined and concentrated in vacuo to 70 mg (57%) of oil.

後処理

  1. customto give a solution which
  2. additionwas added
  3. temperaturethe solution was briefly warmed to 50° C.
  4. filtrationThe resulting mixture was filtered
  5. concentrationthe filtrate was concentrated in vacuo to an oil which
  6. dissolutionwas dissolved in 0.5 ml of methanol
  7. customwas chromatographed over an 85×0.9 cm
  8. concentrationconcentrated in vacuo to 70 mg (57%) of oil

出典と根拠

ORDレコード
ord-e2fb56f4209249dc8ea1639dfb0967c6
出典データセット
uspto-grants-1994_09
特許番号
US05348955

関連ノート

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