Files × / D Chem2535-Exam2-Fall-. X Addition Reactions: Ster-X CO file:///C:/Use

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Files × / D Chem2535-Exam2-Fall-. X Addition Reactions: Ster-X CO file:///C:/Users/kenke/Downloads/Chem2535 _Exam2_Fall _2017_practice key.pdf 3/8 (C) Syn addition, no carbocation intermediate, one new asymmetric center generated, (D) Syn/Anti addition, no carbocation intermediate, two new asymmetric centers generated, (E) The reaction proceeds through a radical mechanism with the formation of two new reaction is stereoselective and stereospecific reaction is not stereoselective and stereospecific reaction is not stereoselective, not stereospecific stereocenters and all possible stereoisomers 171 Choose the reagents that can generate the specified maior product OH CH3OH HBr H20 2. HO, H202, H20 H,so H2SO4 H20 [8] The reaction shown below is a single-step bimolecular reaction with a rate expressed by the following equation: rate-k[CH CH2CH2Br][ HO]. What is the change in rate if the concentration of CH3CH2CH2Br is decreased 6 times and that of HO is increased 2 times? O Type here to search ^ 4, ENG 10/24/2017 247 PM

Explanation / Answer

option C is correct

Explanation: Addition of H2O to alkene in presenc of acid catalyst, H2SO4, follows Markonikov's addition and produces more substituted alcohol as product. The nucleophilic part of the reagetn is added at more substituted carbon atom. so option C is correct

Addition of BH3, THF and H2O2, NaOH to alkene produces less substituted alcohol as product. so option B is not correct.

Addition of CH3OH, H2SO4 to alkene produces ether as product so option D is not correct.

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