Rhodium(III)-Catalyzed Controllable C−H Bond Functionalization of Benzamides and Vinylidenecyclopropanes: A Directing Group Determined Reaction Pathway
作者:Cheng Ji、Qin Xu、Min Shi
DOI:10.1002/adsc.201601308
日期:2017.3.20
A controllable rhodium(III)‐catalyzed C−H bond activation of benzamides and vinylidenecyclopropanes (VDCPs) by changing the directing group from C(O)NH–OPiv to C(O)NH–OBoc has been disclosed, affording two different major products in good yields under mild condition, respectively. The substrate scope has been investigated and a plausible reaction mechanism has been also proposed on the basis of previous
1,3-Dipolar Cycloaddition Reactions of Vinylidenecyclopropane-Diesters with Aromatic Diazomethanes Generated in Situ
作者:Lei Wu、Min Shi
DOI:10.1021/jo100105k
日期:2010.4.2
1,3-Dipolarcycloaddition reactions of VDCP-diesters with aromatic diazomethanes generated in situ from the corresponding aromatic aldehydes and tosylhydrazine mediated by base produce pyrazole derivatives in good yields under mild conditions. A plausible reaction mechanism has been proposed on the basis of control experiments along with the discussion on the regioselectivity.
Yb(OTf)<sub>3</sub>-Catalyzed Construction of Indole Derivatives through Formal [3+3] Cycloaddition of 1,1-Vinylidenecyclopropanediesters with Nitrones
作者:Lei Wu、Dr Min Shi
DOI:10.1002/chem.200902510
日期:2010.1.25
Indulging in indoles: Indolederivatives are efficiently afforded throughYb(OTf)3‐catalyzed formal [3+3] cycloaddition of 1,1‐vinylidenecyclopropanediesters with nitrones in moderate to good yields under mild reaction conditions (see scheme).
Ring-Opening Reaction of Vinylidenecyclopropanediesters Catalyzed by Re2(CO)10 or Yb(OTf)3
作者:Lei Wu、Min Shi
DOI:10.1002/ejoc.201001398
日期:2011.2
Re2(CO)10 or Yb(OTf)3 afforded 2H-pyran-2-one derivatives or α,β-unsaturated ketones in moderate to good yields through a highly regioselectivecarbon–carbonbondcleavage pathway. The substituents at the cyclopropane mainly determine the regioselectivity of the carbon–carbonbondcleavage, providing different products of tandem ring-opening and rearrangement reactions.