Name | 6-Methoxy-1H-indazole |
Synonyms | 3522-07-4 T56 BMNJ HO1 6-Methoxyindazole 6-methoxyindazole 6-Methyloxy-indazole 6-Methoxy-1H-indazoL 6-Methoxy-1H-indazole 6-Methoxy-2H-indazole 1H-Indazole, 6-methoxy- 2H-Indazole, 6-methoxy- |
CAS | 3522-07-4 |
InChI | InChI=1/C8H8N2O/c1-11-7-3-2-6-5-9-10-8(6)4-7/h2-5H,1H3,(H,9,10) |
Molecular Formula | C8H8N2O |
Molar Mass | 148.16 |
Density | 1.244±0.06 g/cm3(Predicted) |
Melting Point | 97-99 °C |
Boling Point | 312.5±15.0 °C(Predicted) |
Flash Point | 114.568°C |
Vapor Presure | 0.001mmHg at 25°C |
pKa | 14.29±0.40(Predicted) |
Storage Condition | 2-8°C |
Refractive Index | 1.647 |
use | 6-methoxy-1H-indazole is a pharmaceutical intermediate. |
Preparation | 6-methoxy-1H-indazole can be made of 2-fluoro-4-methoxybenzaldehyde and hydrazine prepared by ring-closing reaction. Hydrazine (12.9mL,410.5mmol) was added to a stirred solution of 2-fluoro-4-methoxybenzaldehyde (2.0g,12.97mmol) in THF(20.0mL). The mixture was stirred for 3 days at 95°C to 110°C. Concentrate the mixture to 1/3 of its volume. Add water and precipitate the product. The solids were filtered out, washed with plenty of water and dried in a vacuum oven to obtain the white solid compound 6-methoxy-1H-indazole (1.25g,65%). |