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Org. Chem."],"accepted":{"date-parts":[[2022,6,2]]},"abstract":"<jats:p>\n                    The tri(\n                    <jats:italic>n<\/jats:italic>\n                    -butyl)phosphine-catalyzed reaction of isatylidene malononitriles and bis-chalcones in chloroform at 65 \u00b0C afforded functionalized spiro[cyclohexane-1,3'-indolines] in good yields and with good diastereoselectivity. On the other hand, the tri(\n                    <jats:italic>n<\/jats:italic>\n                    -butyl)phosphine-catalyzed reaction of 3-(ethoxycarbonylmethylene)oxindoles and bis-chalcones gave functionalized spiro[cyclohexane-1,3'-indolines] with different regioselectivity. 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