Amr, Fares Ibrahim; Vila, Carlos; Blay, Gonzalo; Muñoz Roca, María del Carmen; Pedro, José R.(Wiley, 2016-05-19)
A quinine-derived thiourea catalysed the
enantioselective addition of 4-substituted pyrazolones
to isatin-derived ketimines, providing a variety
of aminooxindole-pyrazolone adducts containing
congested vicinal ...
Vila, Carlos; Amr, Fares Ibrahim; Blay, Gonzalo; Muñoz Roca, María del Carmen; Pedro, José R.(Wiley, 2016-05-20)
An efficient one-pot asymmetric synthesis of
pyrazoles bearing a chiral quaternary stereocenter has
been developed. Quinine-derived thiourea catalyzed the
enantioselective addition of pyrazolones to isatin-derived
ketimines, ...