Acetic Acid → Methyl 3-carbamimidoylbenzoate acetate

HRID 1970874Notes

Reaction equation

HRID 1970874 reaction equation
[C:1]([OH:4])(=[O:3])[CH3:2].O.CC1O[N:10]=[C:9]([C:12]2[CH:13]=[C:14]([CH:19]=[CH:20][CH:21]=2)[C:15]([O:17][CH3:18])=[O:16])[N:8]=1>CO>[C:1]([OH:4])(=[O:3])[CH3:2].[C:9]([C:12]1[CH:13]=[C:14]([CH:19]=[CH:20][CH:21]=1)[C:15]([O:17][CH3:18])=[O:16])(=[NH:8])[NH2:10]

Participants

5

Reactant 3

HCID 176Acetic AcidHCID 962Water2×HCID 53429639Methyl 3-(5-methyl-1,2,4-oxadiazol-3-YL)benzoate

Product 1

HCID 66985510Methyl 3-carbamimidoylbenzoate acetate

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

150 ml of acetic acid, 150 ml of water and 50 g of water-moist Raney nickel are added to a solution of 327 g (1.47 mol) of methyl 3-(5-methyl-1,2,4-oxadiazol-3-yl)benzoate in 3 l of methanol, and the mixture is hydrogenated at room temperature and atmospheric pressure for 18 hours. The catalyst is filtered off, and the filtrate is evaporated. The residue is taken up in tert-butyl methyl ether, heated to the boil and filtered off with suction. The residue is dried in vacuo: 3-methoxycarbonylbenzamidinium acetate as colourless crystals; m.p. 222° C.; ESI 179 (M+H); HPLC: Rt=1.40 min (method B).

Workup

  1. customis hydrogenated at room temperature
  2. filtrationThe catalyst is filtered off
  3. customthe filtrate is evaporated
  4. temperatureheated to the boil
  5. filtrationfiltered off with suction
  6. customThe residue is dried in vacuo

Sources & evidence

ORD record
ord-b42910b17b394e14a7efb552d8dafa83
Source dataset
uspto-grants-2013_04
Patent number
US08431572B2

Reaction notes

Loading…