Hydrazinecarboxaldehyde → HCID 18349244, compound

HRID 2268096Notes

Reaction equation

HRID 2268096 reaction equation
[C:1]([C:5]1[CH:6]=[C:7]2[C:11](=[CH:12][CH:13]=1)[C:10](=[O:14])[N:9]([CH:15]([C:20]1[CH:25]=[CH:24][C:23]([O:26][CH3:27])=[C:22]([O:28][CH2:29][CH3:30])[CH:21]=1)[CH2:16][C:17](O)=[O:18])[C:8]2=[O:31])([CH3:4])([CH3:3])[CH3:2].C(N1C=CN=C1)(N1C=CN=C1)=O.[CH:44]([NH:46][NH2:47])=O.P(Cl)(Cl)(Cl)=O>C(#N)C>[C:1]([C:5]1[CH:6]=[C:7]2[C:11](=[CH:12][CH:13]=1)[C:10](=[O:14])[N:9]([CH:15]([C:20]1[CH:25]=[CH:24][C:23]([O:26][CH3:27])=[C:22]([O:28][CH2:29][CH3:30])[CH:21]=1)[CH2:16][C:17]1[O:18][CH:44]=[N:46][N:47]=1)[C:8]2=[O:31])([CH3:3])([CH3:2])[CH3:4]

Participants

6

Reactant 4

HCID 12229HydrazinecarboxaldehydeHCID 24813Phosphorus oxychlorideHCID 682631,1'-CarbonyldiimidazoleHCID 219886533-(4-Tert-butylphthalimido)-3-(3-ethoxy-4-methoxyphenyl)propanoic acid

Product 1

HCID 18349244HCID 18349244, compound

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

5-(t-Butyl)-2-[1-(3-ethoxy-4-methoxyphenyl)-2-(1,3,4-oxadiazol-2-yl)ethyl]isoindoline-1,3-dione was prepared as described for Example 8 from 3-[5-(tert-butyl)-1,3-dioxoisoindolin-2-yl]-3-(3-ethoxy-4-methoxyphenyl)propanoic acid (2.0 g, 4.7 mmol), carbonyldiimidazole (0.81 g, 5.0 mmol), formic hydrazide (0.35 g, 5.8 mmol), and phosphorus oxychloride (1.0 mL, 10.7 mmol) in acetonitrile (20 mL). The product was isolated as a white solid (800 mg, 38% yield): mp, 136.0-138.5° C.; 1H NMR (CDCl3) δ 1.35 (s, 9H, CH3), 1.44 (t, J=6.9 Hz, 3H, CH3), 3.79 (dd, J=5.9, 16.1 Hz, 1H, CHH), 3.84 (s, 3H, CH3), 4.11 (q, J=7.1 Hz, 2H, CH2), 4.38 (dd, J=10.3, 15.8 Hz, 1H, CHH), 5.80 (dd, J=5.9, 10.4 Hz, 1H, NCH), 6.82 (d, J=8.2 Hz, 1H, Ar), 7.11-7.17(m, 2H, Ar), 7.70 (br s, 2H, Ar), 7.82 (br s, 1H, Ar), 8.29 (s, 1H, Ar); 13C NMR (CDC3) δ 14.71, 27.73, 31.08, 35.72, 51.78, 55.92, 64.44, 111.36, 112.58, 120.31, 120.63, 123.26, 128.94, 130.33, 131.14, 131.84, 148.41, 149.42, 153.02, 158.82, 164.07, 168.25, 168.39; Anal Calcd for C25H27N3O5+0.11 H2O: C, 66.51; H, 6.08; N, 9.31; H2O, 0.43. Found: C, 66.42; H, 5.83; N, 9,18; H2O, 0.43.

Sources & evidence

ORD record
ord-8e7a94fc9ef44ef2b8e553f8a2702d41
Source dataset
uspto-grants-2001_12
Patent number
US06326388B1

Reaction notes

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