Hydrochloric Acid → Ethyl 4-[1-(4-chlorobenzyl)-5-fluorobenzimidazol-2-yl]-3,3-dimethylbutanoate

HRID 893354노트

반응식

HRID 893354 반응식
[Cl:1][C:2]1[CH:17]=[CH:16][C:5]([CH2:6][NH:7][C:8]2[CH:14]=[CH:13][C:12]([F:15])=[CH:11][C:9]=2[NH2:10])=[CH:4][CH:3]=1.[CH3:18][CH:19]=C(C)C.[CH3:23][C:24]([CH3:33])([CH2:29][C:30](O)=O)[CH2:25][C:26]([OH:28])=[O:27].Cl>C(Cl)(Cl)Cl.C(O)C.C(N(CC)CC)C>[Cl:1][C:2]1[CH:17]=[CH:16][C:5]([CH2:6][N:7]2[C:8]3[CH:14]=[CH:13][C:12]([F:15])=[CH:11][C:9]=3[N:10]=[C:30]2[CH2:29][C:24]([CH3:23])([CH3:33])[CH2:25][C:26]([O:28][CH2:18][CH3:19])=[O:27])=[CH:4][CH:3]=1

참가 물질

8

반응물 4

HCID 313Hydrochloric AcidHCID 105532-Methyl-2-butene2회HCID 209843,3-Dimethylglutaric acidHCID 149529912-(4-Chlorobenzylamino)-5-fluoroaniline

생성물 1

HCID 14953020Ethyl 4-[1-(4-chlorobenzyl)-5-fluorobenzimidazol-2-yl]-3,3-dimethylbutanoate

시약·촉매·용매 3

HCID 702Ethanol용매HCID 6212Chloroform용매2회HCID 8471Triethylamine용매

실험 절차

10 g of 2-(4-chlorobenzylamino)-5-fluoroaniline, prepared in Example 8, are dissolved in 100 ml of chloroform, stabilized with amylene, and 6 ml of triethylamine. A solution of 8.25 g of the acid chloride ethyl ester of 3,3-dimethylglutaric acid, prepared in Example 28, in 20 ml of chloroform, stabilized with amylene, is added dropwise. The mixture is stirred for two hours at room temperature, the crystals formed rae filtered off and the solvents are evaporated off under vacuum. The residue obtained is dissolved in 200 ml of ethanol and 30 ml of concentrated hydrochloric acid and the mixture is refluxed for 10 hours. The solvents are evaporated off to dryness and the residue is taken up with water and then extracted with ethyl acetate. The organic phase is dried and evaporated under vacuum to give 14 g of ethyl 4-[1-(4-chlorobenzyl)-5-fluorobenzimidazol-2-yl]-3,3-dimethylbutanoate in the form of an oil, which is used as such for the next step.

후처리

  1. additionis added dropwise
  2. customthe crystals formed rae
  3. filtrationfiltered off
  4. customthe solvents are evaporated off under vacuum
  5. customThe residue obtained
  6. customThe solvents are evaporated off to dryness
  7. extractionextracted with ethyl acetate
  8. customThe organic phase is dried
  9. customevaporated under vacuum

출처 및 근거

ORD 기록
ord-c97612086db44aa7bfe0b98e35df60a4
출처 데이터셋
uspto-grants-1992_06
특허 번호
US05124336

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