Methanesulfonic Acid → (2E)-3-[5-(4-fluorophenyl)-1-methyl-1H-pyrazol-4-yl]-N-{4-[(5-methyl-1,3,4-oxadiazol-2-yl)methyl]phenyl}acrylamide

HRID 30718

반응식

HRID 30718 반응식
[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[N:12]([CH3:13])[N:11]=[CH:10][C:9]=2/[CH:14]=[CH:15]/[C:16]([NH:18][C:19]2[CH:24]=[CH:23][C:22]([CH2:25][C:26]([NH:28][NH2:29])=[O:27])=[CH:21][CH:20]=2)=[O:17])=[CH:4][CH:3]=1.[C:30](OCC)(OCC)(OCC)[CH3:31].CS(O)(=O)=O.O1CCCC1>C(OCC)(=O)C>[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[N:12]([CH3:13])[N:11]=[CH:10][C:9]=2/[CH:14]=[CH:15]/[C:16]([NH:18][C:19]2[CH:20]=[CH:21][C:22]([CH2:25][C:26]3[O:27][C:30]([CH3:31])=[N:29][N:28]=3)=[CH:23][CH:24]=2)=[O:17])=[CH:4][CH:3]=1

참가 물질

6

반응물 4

HCID 6395Methanesulfonic AcidHCID 8028TetrahydrofuranHCID 66221Triethyl orthoacetateHCID 69209331(2E)-3-[5-(4-fluorophenyl)-1-methyl-1H-pyrazol-4-yl]-N-[4-(2-hydrazino-2-oxoethyl)phenyl]acrylamide

생성물 1

HCID 69210253(2E)-3-[5-(4-fluorophenyl)-1-methyl-1H-pyrazol-4-yl]-N-{4-[(5-methyl-1,3,4-oxadiazol-2-yl)methyl]phenyl}acrylamide수율 47.1%

시약·촉매·용매 1

HCID 8857Ethyl Acetate용매

실험 절차

A mixture of (2E)-3-[5-(4-fluorophenyl)-1-methyl-1H-pyrazol-4-yl]-N-[4-(2-hydrazino-2-oxoethyl)phenyl]acrylamide (0.50 g), triethyl orthoacetate (0.63 g), methanesulfonic acid (0.025 g), and tetrahydrofuran (10 mL) was heated under reflux for 1 hr. The reaction mixture was diluted with ethyl acetate, washed successively with saturated aqueous sodium hydrogen carbonate and saturated brine, dried over anhydrous magnesium sulfate and concentrated. The residue was subjected to silica gel column chromatography to give (2E)-3-[5-(4-fluorophenyl)-1-methyl-1H-pyrazol-4-yl]-N-{4-[(5-methyl-1,3,4-oxadiazol-2-yl) methyl]phenyl}acrylamide as pale-yellow crystals (0.25 g, yield 46%) from a fraction eluted with ethyl acetate-methanol (100:0-20:1, v/v). Recrystallization thereof from ethyl acetate-hexane gave pale-yellow prism crystals. melting point: 151-152° C.

후처리

  1. temperaturewas heated
  2. temperatureunder reflux for 1 hr
  3. washwashed successively with saturated aqueous sodium hydrogen carbonate and saturated brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. concentrationconcentrated

출처 및 근거

ORD 기록
ord-76a52bfb8fda4b18b22905c1ff77b86f
출처 데이터셋
uspto-grants-2008_09
특허 번호
US07423159B2

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