CHEM 2262 : PracticeQuestionsExam2 Key
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Answer key: indicate reagents and conditions for the following transformations. For this problem you will find nbs to be a useful reagent; acetylene (after deprotonation by a strong base) and nacn will be useful nucleophiles. H prepared as described above (toluene + nbs) H3o: indicate reagents and conditions for the following transformations. For this problem you will need to use pph3 as a reagent (for wittig reactions). You will also need to remember methods for the generation of alkyl halides, aldehydes and ketones. Pcc: provide a mechanism for the following transformation. Support your answer using perspective drawings (i. e. , wedged and dashed bonds) showing a pair of mirror images for the spiroketal and indicating whether the mirror images are identical or nonidentical. You can demonstrate this by showing its mirror image is nonidentical (left), or by showing that the molecule possess neither a symmetry plane or an inversion center.
