5-(4-amino-cyclopent-2-enyl)-9-chloro-3-methyl-5H-isoxazolo[4,3-c]quinolin-4-one → N-[4(9-chloro-3-methyl-4-oxo-5H-isoxazolo[4,3-c]quinolin-5-yl)-cyclopent-2-enyl]2-oxo-2-(3,4,5-trimethoxy-phenyl)-acetamide

HRID 1838452Notes

Reaction equation

HRID 1838452 reaction equation
[NH2:1][CH:2]1[CH2:6][CH:5]([N:7]2[C:16]3[CH:15]=[CH:14][CH:13]=[C:12]([Cl:17])[C:11]=3[C:10]3=[N:18][O:19][C:20]([CH3:21])=[C:9]3[C:8]2=[O:22])[CH:4]=[CH:3]1.[O:23]=[C:24]([C:28]1[CH:33]=[C:32]([O:34][CH3:35])[C:31]([O:36][CH3:37])=[C:30]([O:38][CH3:39])[CH:29]=1)[C:25](Cl)=[O:26]>C(Cl)Cl.CN(C1C=CN=CC=1)C>[Cl:17][C:12]1[C:11]2[C:10]3[C:9](=[C:20]([CH3:21])[O:19][N:18]=3)[C:8](=[O:22])[N:7]([CH:5]3[CH2:6][CH:2]([NH:1][C:25](=[O:26])[C:24](=[O:23])[C:28]4[CH:29]=[C:30]([O:38][CH3:39])[C:31]([O:36][CH3:37])=[C:32]([O:34][CH3:35])[CH:33]=4)[CH:3]=[CH:4]3)[C:16]=2[CH:15]=[CH:14][CH:13]=1

Participants

5

Reactant 2

HCID 120949645-(4-amino-cyclopent-2-enyl)-9-chloro-3-methyl-5H-isoxazolo[4,3-c]quinolin-4-oneHCID 226400793,4,5-Trimethoxyphenyl-2-oxoacetyl chloride

Product 1

HCID 18753704N-[4(9-chloro-3-methyl-4-oxo-5H-isoxazolo[4,3-c]quinolin-5-yl)-cyclopent-2-enyl]2-oxo-2-(3,4,5-trimethoxy-phenyl)-acetamideYield 38%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent2×

Procedure

To a stirred solution of 5-(4-amino-cyclopent-2-enyl)-9-chloro-3-methyl-5H-isoxazolo[4,3-c]quinolin-4-one (50 mg, 0.216 mmol) in CH2Cl2 (2 mL) was added oxo-(3,4,5-trimethoxy-phenyl)acetyl chloride (80 mg, 0.33 mmol, prepared from its acid and oxalyl chloride) and DMAP (catalytic amount) and stirred at r.t. for 18 hours. The mixture was diluted with CH2Cl2, washed (brine), dried (Na2SO4), filtered and concentrated. Column chromatography (silica gel, hexanes/ethyl acetate, gradient) gave the title compound (33 mg, 38%). Mass Spectrum (FIA) (m/z) 538A 4 (A+1). 1H NMR (CDCl3): δ 7.80 (d, 1H); 7.50 (t, 1H); 7.35 (d, 1H); 6.00 (m, 2H); 5.40 (m, 1H); 5.21 (m, 111); 3.80-3.90 (m, 1H); 2.95 (s, 3H); 2.30 (m, 1H).

Workup

  1. washwashed (brine)
  2. dry with materialdried (Na2SO4)
  3. filtrationfiltered
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-f0f0ad6a9cd04a22aac3b19ca9340fa6
Source dataset
uspto-grants-2004_01
Patent number
US06673809B2

Reaction notes

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