Abstract
A novel method for the construction of spirooxindole via imino Diels-Alder reaction of in situ generated isatin imine with dihydropyran is reported. InCl3 efficiently catalyzes the reaction to afford cis- and trans-diastereisomers in fairly good yields. Keywords: Indium chloride, imino Diels-Alder reaction, isatin, tetrahydroquinoline, spirooxindole
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