Triethylamine → N-cyano-N'-[2-(3,4-dibenzyloxyphenyl)ethyl]-3-pyridinecarboximidamide

HRID 1588544ノート

反応式

HRID 1588544 の反応式
[C:1]([N:3]=[C:4]([C:9]1[CH:10]=[N:11][CH:12]=[CH:13][CH:14]=1)OC(C)C)#[N:2].[CH:15]1[CH:20]=[CH:19][C:18]([CH2:21][O:22][C:23]2[CH:28]=[CH:27][C:26]([CH2:29][CH2:30][NH2:31])=[CH:25][C:24]=2[O:32][CH2:33][C:34]2[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=2)=[CH:17][CH:16]=1.Cl.C(N(CC)CC)C>CO>[C:1]([NH:3][C:4]([C:9]1[CH:10]=[N:11][CH:12]=[CH:13][CH:14]=1)=[N:31][CH2:30][CH2:29][C:26]1[CH:27]=[CH:28][C:23]([O:22][CH2:21][C:18]2[CH:19]=[CH:20][CH:15]=[CH:16][CH:17]=2)=[C:24]([O:32][CH2:33][C:34]2[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=2)[CH:25]=1)#[N:2]

参加物

5

反応物 3

HCID 8471TriethylamineHCID 2723941Benzeneethanamine, 3,4-bis(phenylmethoxy)-, hydrochloride (1:1)HCID 100812013-Pyridinecarboximidic acid, N-cyano-, 1-methylethyl ester

生成物 1

HCID 19734474N-cyano-N'-[2-(3,4-dibenzyloxyphenyl)ethyl]-3-pyridinecarboximidamide収率 23.1%

試薬・触媒・溶媒 1

HCID 887Methanol溶媒

実験手順

Isopropyl N-cyano-3-pyridinecarboximidate (0.25 g, 1.3 mmol) was dissolved in methanol (10 ml), and 3,4-(dibenzyloxy)phenethylamine hydrochloride (0.54 g, 1.5 mmol) and triethylamine (0.15 g, 1.5 mmol) were added. The mixture was stirred at room temperature for 45 minutes. After the reaction was completed, the reaction solution was concentrated under reduced pressure. The residual concentrate thus obtained was extracted with ethyl acetate (100 ml×3). The ethyl acetate layer was washed with water (100 ml), dried over anhydrous sodium sulfate and concentrated under reduced pressure. The residual concentrate was subjected to chromatography on a silica gel column (WAKO GEL C-200, 50 g) eluting with chloroform-methanol (100:1). The eluted fractions were concentrated under reduced pressure to give N-cyano-N'-[2-(3,4-dibenzyloxyphenyl)ethyl]-3-pyridinecarboximidamide (0.13 g, 0.3 mmol, yield: 21%) as colorless syrup. Next, to this syrup was added a 5% hydrogen chloride in methanol (2 ml). The solution was crystallized from methanol diethyl ether to give N-cyano-N'-[ 2-(3,4-dibenzyloxyphenyl)ethyl]-3-pyridinecarboximidamide hydrochloride as colorless powder.

後処理

  1. concentrationthe reaction solution was concentrated under reduced pressure
  2. concentrationThe residual concentrate thus
  3. customobtained
  4. extractionwas extracted with ethyl acetate (100 ml×3)
  5. washThe ethyl acetate layer was washed with water (100 ml)
  6. dry with materialdried over anhydrous sodium sulfate
  7. concentrationconcentrated under reduced pressure
  8. concentrationThe residual concentrate
  9. washeluting with chloroform-methanol (100:1)
  10. concentrationThe eluted fractions were concentrated under reduced pressure

出典と根拠

ORDレコード
ord-6095855fb97b4d368fd7275799a0994a
出典データセット
uspto-grants-1993_06
特許番号
US05223508

反応ノート

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