Hydrochloric Acid → Ethyl 3-(4-(2-tetrazolyl)-phenylhydrazino)-4-oxopentanoate

HRID 399419

反応式

HRID 399419 の反応式
[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[N:12]=[N:11][CH:10]=[N:9]2)=[CH:4][CH:3]=1.Cl.[N:14]([O-])=O.[Na+].[C:18]([CH:21](C(=O)C)[CH2:22][C:23]([O:25][CH2:26][CH3:27])=[O:24])(=[O:20])[CH3:19]>C(O)C.N1C=CC=CC=1.O>[N:9]1[N:8]([C:5]2[CH:4]=[CH:3][C:2]([NH:1][NH:14][CH:21]([C:18](=[O:20])[CH3:19])[CH2:22][C:23]([O:25][CH2:26][CH3:27])=[O:24])=[CH:7][CH:6]=2)[N:12]=[N:11][CH:10]=1

参加物

8

反応物 4

HCID 313Hydrochloric AcidHCID 87820Ethyl 3-acetyl-4-oxopentanoateHCID 5716394-(2H-1,2,3,4-tetrazol-2-yl)anilineHCID 23668193Sodium Nitrite

生成物 1

HCID 53974079Ethyl 3-(4-(2-tetrazolyl)-phenylhydrazino)-4-oxopentanoate

試薬・触媒・溶媒 3

HCID 702Ethanol溶媒2 回HCID 962Water溶媒3 回HCID 1049Pyridine溶媒

実験手順

A solution of 1.06 gm. (6.58 mmoles) of 2-(4-aminophenyl)tetrazole in 20 ml. of ethanol and 1.18 ml. of concentrated hydrochloric acid and 10 ml. of water was cooled in an ice bath and treated dropwise with a solution of 500 mg. of sodium nitrite in 10 ml. of water. After the addition of an additional 10 ml. of water, the mixture was stirred for 25 minutes at room temperature. The mixture was then added to a solution of 1.35 gm. (7.2 mmoles) of ethyl 3-acetyl-4-oxopentanoate and 2.66 ml. of pyridine in 15 ml. of ethanol. A solid began to separate. After 1 hour, 10 ml. of 1 M hydrochloric acid was added to adjust the pH to 2-3. An additional 50 ml. of water was added and the solid was collected and washed thoroughly with water and dried. 1.74 g. was obtained.

後処理

  1. additiontreated dropwise with a solution of 500 mg
  2. additionAfter the addition of an additional 10 ml
  3. additionThe mixture was then added to a solution of 1.35 gm
  4. customto separate
  5. additionof 1 M hydrochloric acid was added
  6. additionof water was added
  7. customthe solid was collected
  8. washwashed thoroughly with water
  9. customdried
  10. customwas obtained

出典と根拠

ORDレコード
ord-6b64e15b64cd411dad25059c24699d8a
出典データセット
uspto-grants-1998_10
特許番号
US05821243

関連ノート

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