Malic Acid → O-[4-(hexadecylamino)benzoyl]malic acid

HRID 2049090

反応式

HRID 2049090 の反応式
C([N:11]([CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH2:34][CH2:35][CH3:36])[C:12]1[CH:20]=[CH:19][C:15]([C:16](Cl)=[O:17])=[CH:14][CH:13]=1)(OCC1C=CC=CC=1)=O.C(N(CC)CC)C.[C:44]([OH:52])(=[O:51])[CH:45]([CH2:47][C:48]([OH:50])=[O:49])[OH:46].[H][H]>O1CCCC1.CCOCC>[CH2:21]([NH:11][C:12]1[CH:13]=[CH:14][C:15]([C:16]([O:51][C:44](=[O:52])[CH:45]([CH2:47][C:48]([OH:50])=[O:49])[OH:46])=[O:17])=[CH:19][CH:20]=1)[CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH2:34][CH2:35][CH3:36]

参加物

7

反応物 4

HCID 525Malic AcidHCID 8471TriethylamineHCID 20437379N-carbobenzyloxy-4-(hexadecylamino)benzoyl chlorideHCID 178418361HCID 178418361、化合物

生成物 1

HCID 86736912O-[4-(hexadecylamino)benzoyl]malic acid

試薬・触媒・溶媒 2

HCID 3283Diethyl Ether溶媒HCID 8028Tetrahydrofuran溶媒

実験手順

To a warm solution of N-carbobenzyloxy-4-(hexadecylamino)benzoyl chloride and 1.3 g. (1 eq) triethylamine in 100 ml. ether is treated with 2 g. (14.9 m moles) malic acid. An immediate precipitate forms, but the mixture is refluxed for one hour and filtered while hot. The solid is washed several times with hot ether, then the ether is evaporated to yield a white solid. The product is dissolved in tetrahydrofuran (100 ml.) and hydrogenated over 600 mg. 10% Pd(C) at 50 psi until hydrogen uptake stops. The catalyst is filtered, the solution is evaporated, and the residue is crystallized from acetic acid to yield the title compound as a tan, crystalline mass.

後処理

  1. temperatureAn immediate precipitate forms, but the mixture is refluxed for one hour
  2. filtrationfiltered while hot
  3. washThe solid is washed several times with hot ether
  4. customthe ether is evaporated
  5. customto yield a white solid
  6. filtrationThe catalyst is filtered
  7. customthe solution is evaporated
  8. customthe residue is crystallized from acetic acid

出典と根拠

ORDレコード
ord-de465cf53f2b442588218722b46bc506
出典データセット
uspto-grants-1980_04
特許番号
US04196208

関連ノート

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