Acetic Acid → trans-6-Aminomethyl-3,4-dihydro-2,2-dimethyl-4-(2-oxopyrrolidinyl)-2H-1-benzopyran-3-ol

HRID 2166082

反応式

HRID 2166082 の反応式
[C:1]([C:3]1[CH:4]=[CH:5][C:6]2[O:11][C:10]([CH3:13])([CH3:12])[C@@H:9]([OH:14])[C@H:8]([N:15]3[CH2:19][CH2:18][CH2:17][C:16]3=[O:20])[C:7]=2[CH:21]=1)#[N:2].C(O)(=O)C.Cl.[H][H]>C(O)C.[Pd]>[NH2:2][CH2:1][C:3]1[CH:4]=[CH:5][C:6]2[O:11][C:10]([CH3:12])([CH3:13])[C@@H:9]([OH:14])[C@H:8]([N:15]3[CH2:19][CH2:18][CH2:17][C:16]3=[O:20])[C:7]=2[CH:21]=1

参加物

7

反応物 4

HCID 176Acetic AcidHCID 313Hydrochloric AcidHCID 93504LevcromakalimHCID 178418361HCID 178418361、化合物

生成物 1

HCID 67883096trans-6-Aminomethyl-3,4-dihydro-2,2-dimethyl-4-(2-oxopyrrolidinyl)-2H-1-benzopyran-3-ol

試薬・触媒・溶媒 2

HCID 23938Palladium触媒HCID 702Ethanol溶媒

実験手順

trans-6-Cyano-3,4-dihydro-2,2-dimethyl-4-(2-oxopyrrolidinyl)-2H-1-benzopyran-3-ol (5 g, prepared as described in J. Med. Chem. 29, 2194 (1986)), in ethanol (375 ml) and glacial acetic acid (75 ml) containing concentrated HCl (5 ml) was shaken in the presence of 10% Pd/C (1 g) in an atmosphere of hydrogen for 4 h. The catalyst was filtered off and the solution neutralised with 10% aqueous NaOH solution, and the solution evaporated to dryness. Acid-base extraction, and drying of a dichloromethane solution of the residue, furnished, after recrystallisation from ethyl acetate-pentane, 2.03 g of the required aminomethyl compound of example 4 of mp 191°-193° C. as the hemihydrate.

後処理

  1. filtrationThe catalyst was filtered off
  2. customthe solution evaporated to dryness
  3. extractionAcid-base extraction
  4. dry with materialdrying of a dichloromethane solution of the residue
  5. customfurnished
  6. customafter recrystallisation from ethyl acetate-pentane, 2.03 g of the required aminomethyl compound of example 4 of mp 191°-193° C. as the hemihydrate

出典と根拠

ORDレコード
ord-7c1ed09bf7bc4db88854ab30cfa246e4
出典データセット
uspto-grants-1990_07
特許番号
US04943582

関連ノート

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