A convenient synthesis of N-methyl-3-(2-ethenylphenyl)-1(2H)-isoquinolones, key models for the elaboration of the benzo[c]phenanthridinone and phenanthridine skeletons
摘要:
A variety of N-methyl-3-(2-ethenylphenyl)-1(2H)-isoquinolones 1a-e have been prepared by base-induced intramolecular cyclization of N-(2-ethenylbenzoyl)-N,2-dimethylbenzamide derivatives 2a-e. The concomitant formation of the fused dihydro benzo[c]phenanthridinones 7a-e was also observed during this process.
A convenient synthesis of N-methyl-3-(2-ethenylphenyl)-1(2H)-isoquinolones, key models for the elaboration of the benzo[c]phenanthridinone and phenanthridine skeletons
摘要:
A variety of N-methyl-3-(2-ethenylphenyl)-1(2H)-isoquinolones 1a-e have been prepared by base-induced intramolecular cyclization of N-(2-ethenylbenzoyl)-N,2-dimethylbenzamide derivatives 2a-e. The concomitant formation of the fused dihydro benzo[c]phenanthridinones 7a-e was also observed during this process.
Cobalt(III)-Catalyzed C−H Activation: Counter Anion Triggered Desilylative Direct <i>ortho-</i>
Vinylation of Secondary Benzamides
作者:Nachimuthu Muniraj、Kandikere Ramaiah Prabhu
DOI:10.1002/adsc.201800649
日期:2018.9.17
A Co(III)‐catalyzedcounteraniontriggereddesilylativedirectortho‐vinylation of secondarybenzamides is reported. The reaction furnishes the alkenylated product, exclusively, and no formation of the possible cyclic products was observed. Mechanistic studies suggest that the counteranion, [SbF6]−, plays a crucial role in the desilylation. The utility of alkynylsilanes instead of terminal alkynes