Diisopropylethylamine → 3-[5-bromo-2-oxo-3-[[1-[2-(phenylmethoxy)phenyl]cyclopropyl]amino]-1(2H)-pyrazinyl]-5-fluoro-4-methyl-benzoic acid, methyl ester

HRID 337090Notes

Reaction equation

HRID 337090 reaction equation
[CH2:1]([O:8][C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=1[C:15]1([NH2:18])[CH2:17][CH2:16]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.Br[C:20]1[C:21](=[O:39])[N:22]([C:27]2[CH:28]=[C:29]([CH:34]=[C:35]([F:38])[C:36]=2[CH3:37])[C:30]([O:32][CH3:33])=[O:31])[CH:23]=[C:24]([Br:26])[N:25]=1.C(N(C(C)C)C(C)C)C>O1CCOCC1.Cl>[Br:26][C:24]1[N:25]=[C:20]([NH:18][C:15]2([C:10]3[CH:11]=[CH:12][CH:13]=[CH:14][C:9]=3[O:8][CH2:1][C:2]3[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=3)[CH2:17][CH2:16]2)[C:21](=[O:39])[N:22]([C:27]2[CH:28]=[C:29]([CH:34]=[C:35]([F:38])[C:36]=2[CH3:37])[C:30]([O:32][CH3:33])=[O:31])[CH:23]=1

Participants

6

Reactant 3

HCID 81531DiisopropylethylamineHCID 666857581-(2-(Benzyloxy)phenyl)cyclopropanamineHCID 66689945methyl 3-(3,5-dibromo-2-oxo-1(2H)-pyrazinyl)-5-fluoro-4-methylbenzoate

Product 1

HCID 866615883-[5-bromo-2-oxo-3-[[1-[2-(phenylmethoxy)phenyl]cyclopropyl]amino]-1(2H)-pyrazinyl]-5-fluoro-4-methyl-benzoic acid, methyl ester

Reagents, catalysts & solvents 2

HCID 313Hydrochloric AcidSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
100 °C

Procedure

A solution of 1-(2-(benzyloxy)phenyl)cyclopropanamine (Example 167a, 5 g) in dioxane (200 mL) was treated with 3-(3,5-dibromo-2-oxo-2H-pyrazin-1-yl)-5-fluoro-4-methyl-benzoic acid, methyl ester (Example 252g, 7.5 g) and N-ethyldiisopropylamine (5.36 mL) under nitrogen. The resulting solution was stirred at 100° C. for 8 h. The cooled reaction mixture was diluted with 2M HCl (300 mL), and extracted with ether (3×300 mL). The combined organics were dried (MgSO4), filtered and evaporated to afford crude product. Purification (SiO2 chromatography eluting with 20% ethyl acetate in iso-hexane) gave the subtitle compound. (9.20 g).

Workup

  1. customThe cooled reaction mixture
  2. extractionextracted with ether (3×300 mL)
  3. dry with materialThe combined organics were dried (MgSO4)
  4. filtrationfiltered
  5. customevaporated
  6. customto afford crude product
  7. customPurification (SiO2 chromatography eluting with 20% ethyl acetate in iso-hexane)

Sources & evidence

ORD record
ord-c5f4d0e5c0a847e4a5abf36186bdfa45
Source dataset
uspto-grants-2014_11
Patent number
US08889692B2

Reaction notes

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