difference between the solution of two problems. The first of these problems is the problem...
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difference between the solution of two problems. The first of these problems is the problem involving the 'real' body, and the second problem is the one where the body is subsituted
![Supporting InformationS1 A regio- and stereocontrolled approach to the synthesis of 4-CF 3-subsituted spiro[chromeno[3,4-c]pyrrolidine-oxindoles] via reversible [3+2] cycloaddition](https://img.pdfslide.net/doc/110x75/5f9cdf5806209f0a1260a31b/supporting-s1-a-regio-and-stereocontrolled-approach-to-the-synthesis-of-4-cf-3-subsituted.jpg)
