6-methylthiobeptane-2-thiol 6-methylthio-2-mercaptoheptane 2-methylthiobeptane-6

Question

6-methylthiobeptane-2-thiol 6-methylthio-2-mercaptoheptane 2-methylthiobeptane-6-thiol 2-mercapto-6-methylthiobeptane 8. Which of the groups listed below would have the highest priority in of assigning E/Z designations for an Alkene? Given that dehydration reactions typically proceed by an E1 mechanism which of The following alcohols will undergo the fastest rate of dehydration upon treating with H_2SO_4 and heat. butan-1-o1 2-methylbutan-1-o1 butan-2-o1 2-methylbutan-2-o1 Consider an electrophilic addition reaction. Which of the following statements regarding Markovnikov's rule is FALSE? It refers to the process of electrophilic addition to alkenes It predicts major reaction products based upon carbocation stability the most stable carbocation leads to the minor product It is independent of carbocation rearrangement What is the mater product of the reaction shown below?

Explanation / Answer

8) option D is correct (priority is given according to molecular weight of group attached to double bond. The first atom attached to double bond is same in all options but the second atom is Br in option D which has highest molecular weight so it is given highest priority.)

9) option d is correct (E1 elimination proceeds through formation of carbocation as an intermediate. tertiary carbocation is more stable than secondary and primary carbocation. 2-methyl-2-butanol forms tertiary carbocation. so it undergoes E1 elimination readily.)

10) option B is correct (According to Markonikov's rule, the negative part of the reagent is added to the carbon atom bearing less number of hydrogens which means more stable carbocation is formed as an intermediate.)

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