Triethylamine → {2-[4-[1,3]Dioxolan-2-ylmethyl-5-(4-fluoro-phenyl)-1-isopropyl-1H-pyrazol-3-yl]-ethyl}-carbamic acid benzyl ester

HRID 606623Notes

Reaction equation

HRID 606623 reaction equation
Cl.[CH:2]([NH:5][NH2:6])([CH3:4])[CH3:3].[CH2:7]([O:14][C:15](=[O:21])[NH:16][CH2:17][CH2:18][CH:19]=O)[C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1.CCN(CC)CC.[F:29][C:30]1[CH:35]=[CH:34][C:33]([CH:36]=[C:37]([N+]([O-])=O)[CH2:38][CH:39]2[O:43][CH2:42][CH2:41][O:40]2)=[CH:32][CH:31]=1>C(O)(C)C>[CH2:7]([O:14][C:15](=[O:21])[NH:16][CH2:17][CH2:18][C:19]1[C:37]([CH2:38][CH:39]2[O:43][CH2:42][CH2:41][O:40]2)=[C:36]([C:33]2[CH:34]=[CH:35][C:30]([F:29])=[CH:31][CH:32]=2)[N:5]([CH:2]([CH3:4])[CH3:3])[N:6]=1)[C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 855731-Isopropylhydrazine hydrochlorideHCID 10398106Benzyl (3-Oxopropyl)carbamateHCID 67047481HCID 67047481, compound

Product 1

HCID 54754013{2-[4-[1,3]Dioxolan-2-ylmethyl-5-(4-fluoro-phenyl)-1-isopropyl-1H-pyrazol-3-yl]-ethyl}-carbamic acid benzyl ester

Reagents, catalysts & solvents 1

HCID 3776IsopropanolSolvent

Conditions

Temperature
60 °C

Procedure

A solution of isopropylhydrazine hydrochloride (1.06 g, 9.6 mmol), (3-oxo-propyl)-carbamic acid benzyl ester (2.0 g, 9.6 mmol), and Et3N (3.9 g, 38.4 mmol) in isopropanol (30 mL) was heated to reflux. After 3 h, the solution was treated with 2-[3-(4-fluoro-phenyl)-2-nitro-allyl]-[1,3]dioxolane (2.2 g, 8.7 mmol) and stirred at 60° C. for 18 h. The mixture was cooled to rt and concentrated. The residue was partitioned between EtOAc and water. The organic layer was separated, dried (MgSO4), and concentrated. Purification by FCC gave the title compound.

Workup

  1. temperatureThe mixture was cooled to rt
  2. concentrationconcentrated
  3. customThe residue was partitioned between EtOAc and water
  4. customThe organic layer was separated
  5. dry with materialdried (MgSO4)
  6. concentrationconcentrated
  7. customPurification by FCC

Sources & evidence

ORD record
ord-b69b21dd81c34ab1861ce9f0a5fd3e71
Source dataset
uspto-grants-2011_03
Patent number
US07915404B2

Reaction notes

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