WARGHUDE, PRAKASH K.; SABALE, ABHIJEET S.; Dixit, Ruchi; Vanka, Kumar; BHAT, RAMAKRISHNA G.
(Royal Society of Chemistry, 2021-05)
A highly regioselective [3 + 2] annulation of Morita–Baylis–Hillman (MBH) carbonates of isatin with aurone/thioaurone is developed. Spiroheterocycles such as spirooxindole cyclopentadiene and spirooxindole fused hydroxy ...