A Facile Route to Pyrazolo[1,2‐a]cinnoline via Rhodium(III)‐catalyzed Annulation of Pyrazolidinoes and Iodonium Ylides
Zi YangAcademician Workstation Changsha Medical University Changsha 410219 P. R. ChinaYi ZhouAcademician Workstation Changsha Medical University Changsha 410219 P. R. ChinaHaigang LiAcademician Workstation Changsha Medical University Changsha 410219 P. R. ChinaJieni LeiAcademician Workstation Changsha Medical University Changsha 410219 P. R. ChinaPingping BingAcademician Workstation Changsha Medical University Changsha 410219 P. R. ChinaBinsheng HeAcademician Workstation Changsha Medical University Changsha 410219 P. R. ChinaYaqian LiAcademician Workstation Changsha Medical University Changsha 410219 P. R. China
2021en
ABI
Annotatsiya
Abstract A rhodium(III)‐catalysed cascade C−H bond activation/intramolecular cyclization of pyrazolidiones with iodonium ylide has been described, leading to the formation of various pyrazolo[1,2‐a]cinnolines. Herein, iodonium ylide serves as a carbene precursor. This protocol exhibits good regioselectivity and high functional group tolerability under mild reaction conditions.
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