Malic Acid → HCID 86737302, compound

HRID 904488Notes

Reaction equation

HRID 904488 reaction equation
C([N:11]([CH2:21][CH2:22][CH2:23][CH:24]=[CH:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH3:34])[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:42]([OH:50])(=[O:49])[CH:43]([CH2:45][C:46]([OH:48])=[O:47])[OH:44].[H][H]>O1CCCC1.[Pd].CCOCC>[CH2:21]([NH:11][C:12]1[CH:13]=[CH:14][C:15]([C:16]([O:49][C:42](=[O:50])[CH:43]([CH2:45][C:46]([OH:48])=[O:47])[OH:44])=[O:17])=[CH:19][CH:20]=1)[CH2:22][CH2:23][CH:24]=[CH:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH3:34]

Participants

8

Reactant 4

HCID 525Malic AcidHCID 8471TriethylamineHCID 54015883HCID 54015883, compoundHCID 178418361HCID 178418361, compound

Product 1

HCID 86737302HCID 86737302, compound

Reagents, catalysts & solvents 3

HCID 23938PalladiumCatalystHCID 3283Diethyl EtherSolventHCID 8028TetrahydrofuranSolvent

Procedure

A warm solution of N-carbobenzyloxy-4-(4-tetradecenylamino)benzoyl chloride and 1.3 g. triethylamine in 100 ml. ether is treated with 2 g. 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% palladium-on-carbon at 20 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.

Workup

  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

Sources & evidence

ORD record
ord-a03ec357ba5d46df948069a4a94dd686
Source dataset
uspto-grants-1980_10
Patent number
US04230878

Reaction notes

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