Here, we report a highly effective and chemoselective method of preparing substituted indoles from (E)-2-nitropyrrolidinostyrenes via hydrogenation in the presence of a rhodium catalyst doped by additives such as Ni(NO3)2·6H2O, Fe(OAc)2 or Co(acac)3. These hydrogenation conditions may also be applied to other substrates. Aromatic nitro compounds and olefins can be selectively reduced in the presence
PROCESS FOR PRODUCING INDOLOPYRROLOCARBAZOLE DERIVATIVE
申请人:BANYU PHARMACEUTICAL CO., LTD.
公开号:EP1541582A1
公开(公告)日:2005-06-15
The present invention provides a process for industrially advantageously producing a compound represented by the formula (I):
or a pharmaceutically acceptable salt thereof, which is useful as an anticancer agent, and also provides a catalyst used for hydrogenation reaction in the process.