CHEM 353 Study Guide - Quiz Guide: Ethylene, Chch-Dt, Ozonolysis
2 Aug 2014
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Previous material: (cid:120) stereochemistry (cid:120) concerted reactions (cid:120) synthesis of epoxides from vicinal halohydrins. Direct epoxidation of alkenes (10. 4a): (cid:120) using a peroxy acid (r-co3h) (cid:120) stereochemistry: syn addition of oxygen (cid:120) mechanism is a one-step (concerted) process: Which of the following alkenes would react at the fastest rate with a peroxy acid: ethene, Cyclopropane synthesis: using an organozinc reagent: (cid:120) cyclopropanes occur in nature, e. g. , the anti-fungal agent isolated from the fermentation broth of streptoverticillium fervens. Iodomethylzinc iodide reacts with alkenes to form cyclopropanes reaction with alkenes is called the simmons-smith reaction. Show how the carbene is formed (cid:120) carbenes react with alkenes to give cyclopropanes: cbr2 is an intermediate, stereospecific syn addition. Mechanistically, what is the link between the reactions of an alkene with br2, cl2, hg(oac)2, r- Synthesis of 1,2-diols directly from alkenes (10. 5c): (cid:120) using osmium tetroxide and tert-butyl peroxide.
