Water → Ethyl L-cysteinate

HRID 371068

反応式

HRID 371068 の反応式
O.Cl.[NH2:3][C@H:4]([C:7]([O:9][CH2:10][CH3:11])=[O:8])[CH2:5][SH:6]>C(O)C.C(=O)([O-])[O-].[Ag+2]>[NH2:3][C@H:4]([C:7]([O:9][CH2:10][CH3:11])=[O:8])[CH2:5][SH:6]

参加物

5

反応物 2

HCID 962WaterHCID 2723617Ethyl cysteinate hydrochloride

生成物 1

HCID 13359Ethyl L-cysteinate収率 293.9%

試薬・触媒・溶媒 2

HCID 178418647HCID 178418647、化合物触媒HCID 702Ethanol溶媒

実験手順

1.3 g of sulfodehydroabietic acid is dissolved in 15 ml of ethanol and 0.472 mg of silver carbonate and 20 ml of water are added thereto. 0.635 g of ethyl L-cysteinate hydrochloride are added to the mixture and said mixture is stirred at room temperature. The precipitates are filtered off and the filtrate is concentrated to dryness under reduced pressure. The residue is recrystallized from a mixture of methanol and ethyl acetate, whereby 1.5 g of sulfodehydroabietic acid ethyl L-cysteinate salt hemihydrate is obtained.

後処理

  1. filtrationThe precipitates are filtered off
  2. concentrationthe filtrate is concentrated to dryness under reduced pressure
  3. customThe residue is recrystallized from a mixture of methanol and ethyl acetate

出典と根拠

ORDレコード
ord-44d69d7bac994cddb8d765ad2efb1853
出典データセット
uspto-grants-1985_07
特許番号
US04529602

関連ノート

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