| 摘要 |
<p>The present invention relates to a novel and commercially feasible process for the preparation of pyrazolo[1,5-a]pyrimidine compound Zaleplon, wherein a novel intermediate 7-(3bromophenyl)-3,7-dihydropyrazolo[1,5-a]pyrimidine-3-carbonitrile is coupled with acetamide to yield a N-[3-(3-cyanopyrazolo[1,5-a]pyrimidin-7-yl)phenyl]acetamide which on ethylation gives Zaleplon.</p> |
| 申请人 |
KHAMAR, BAKULESH, MAFATLAL;MODI, INDRAVADAN, AMBALAL |
发明人 |
KHAMAR, BAKULESH, MAFATLAL;MODI, INDRAVADAN, AMBALAL;SHUKLA, MANISH, CHANDRAKANT;SRINIVAS, VALA, VALA;KAGATHARA, NIRAV, KESHAVLAL;JAMARIA, NILESH, MANJIBHAI;DANGE, SURYABHAN, PRABHAKAR;RAMAN, J., VENKAT |
