Catalytic asymmetric [3+2] annulation of allylsilanes with isatins: Synthesis of spirooxindoles
Silyl-inspired spirocycle: The title reaction is the first example of a catalytic asymmetric [3+2] annulation reaction with allylsilanes. The annulation reaction utilizes a chiral ScCl2(SbF6)/L catalyst and TMSCl as a promoter to aff
Hanhan, Nadine V.,Ball-Jones, Nicolas R.,Tran, Ngon T.,Franz, Annaliese K.
supporting information; experimental part
p. 989 - 992
(2012/03/08)
Enantioselective and regioselective indium(III)-catalyzed addition of pyrroles to isatins
The indium(III)-catalyzed enantioselective and regioselective addition of pyrroles to isatins is described. The effects of metal and solvent on the reactivity and selectivity are compared and discussed, demonstrating that the indium(III)-indapybox complex
Gutierrez, Elisa G.,Wong, Casey J.,Sahin, Aziza H.,Franz, Annaliese K.
supporting information; experimental part
p. 5754 - 5757
(2011/12/05)
Kinetic resolution by copper-catalyzed azide-alkyne cycloaddition
The use of chiral pybox ligands imparts enantioselectivity to the Cu I-catalyzed azide-alkyne cycloaddition reaction, in the form of kinetic resolution of α-chiral azides and desymmetrization of gem-diazides. While levels of selectivity are modest, the results show unequivocally that the process benefits from ligand-accelerated catalysis.
Meng, Jun-Cai,Fokin, Valery V.,Finn
p. 4543 - 4546
(2007/10/03)
Asymmetric ring opening of meso epoxides with TMSCN catalyzed by (pybox)lanthanide complexes.
The asymmetric ring opening of meso epoxides with TMSCN is catalyzed by (pybox)YbCl3 complexes, yielding the beta-trimethylsilyloxy nitrile ring-opened products with good enantioselectivities (83-92% ee). The reaction exhibits a second-order kinetic depen
Schaus,Jacobsen
p. 1001 - 1004
(2007/10/03)
Concise synthesis of conformationally constrained pybox ligands
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Davies, Ian W.,Gerena, Linda,Lu, Nu,Larsen, Robert D.,Reider, Paul J.
p. 9629 - 9630
(2007/10/03)
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