A highly efficient cinchona alkaloid‐derived squaramide catalysed asymmetric Michael/cyclization cascade reaction of 4‐ arylmethylidene‐2,3‐dioxopyrrolidines with 2‐isothiocyanato‐1‐indanones was successfully developed. This protocol provides an efficient and mild access to obtain indanone‐derived...
An efficient squaramide-catalysed asymmetric Michael addition/cyclization cascade reaction of 3-chlorooxindoles with 2,3-dioxopyrrolidines produced the corresponding chiral spiro-compounds in high yields with excellent stereoselectivities.
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