4-nitroisoindolin-1-one

4-nitroisoindolin-1-one Property

Boiling point:

488.8±45.0 °C(Predicted)

Density 

1.449±0.06 g/cm3(Predicted)

storage temp. 

Sealed in dry,Room Temperature

pka

12.69±0.20(Predicted)

Appearance

Off-white to light yellow Solid

InChI

InChI=1S/C8H6N2O3/c11-8-5-2-1-3-7(10(12)13)6(5)4-9-8/h1-3H,4H2,(H,9,11)

InChIKey

RTDDSWLIZLMORY-UHFFFAOYSA-N

SMILES

C1(=O)C2=C(C([N+]([O-])=O)=CC=C2)CN1

Safety

HS Code 

2933998090

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P337+P313IF eye irritation persists: Get medical advice/attention.

4-nitroisoindolin-1-one Chemical Properties,Usage,Production

Uses

4-Nitroisoindolin-1-one is a reactant that has been used in the synthesis of 4-(N-acyl)-2,3-dihydro-1H-isoindol-1-ones as potent inhibitors of poly(ADP-ribose) polymerase-1 (PARP-1).

Synthesis

General procedure for the synthesis of 4-nitro-isoindolin-1-one from methyl 2-(bromomethyl)-3-nitrobenzoate: methyl 2-(bromomethyl)-3-nitrobenzoate (20 g) was dissolved in methanol (200 ml) and stirred at room temperature under ammonia atmosphere for 30 min, followed by keeping the reaction for 2 hours. After completion of the reaction, the mixture was crystallized in an ice bath for 2 h. The crystals were collected by filtration and dried to give 11.7 g of light yellow crystals in 90% yield. The melting point was 235.4~236.7 °C. 1H-NMR (300 MHz, DMSO-d6) δ: 4.78 (s, 2H), 7.79 (t, 1H), 8.10 (d, 1H), 8.41 (d, 1H), 8.90 (s, 1H). 1H-NMR (300 MHz, DMSO-d6/EtOH) δ: 4.76 (s 2H), 7.77 (t, 1H), 8.08 (d, 1H), 8.39 (d, 1H).FAB-MS (M+1): 179.Elemental analysis: theoretical value (%): C 53.94, H 3.39, N 15.72; measured value (%): C 54.08, H 3.49, N 15.81.HPLC analytical conditions: chromatographic column: Phenomenex Luna 5μ C18 (250mm×4.6mm); Flow rate: 1.0ml/min; Detection wavelength: 230nm; Mobile phase: Acetonitrile/0.1% Phosphate buffer=30/70 (v/v); Retention time of the target product: 5.810 min; Purity: 99.59%.

References

[1] Patent: WO2010/139266, 2010, A1. Location in patent: Page/Page column 37-38
[2] Bioorganic and Medicinal Chemistry Letters, 2004, vol. 14, # 1, p. 81 - 85
[3] Angewandte Chemie - International Edition, 2017, vol. 56, # 1, p. 248 - 253
[4] Angew. Chem., 2017, vol. 129, # 1, p. 254 - 259,6
[5] Patent: WO2006/12374, 2006, A1. Location in patent: Page/Page column 209