Question

True or False

1. Zaitzeff's rule is usefull for predicting the regiochemistry of electrophilic addition reaction ?

2. Markovnikov's Rule is usefull for predicting the regiochemstry  of electrophilic addition reaction ?

3. A Alkene bromination reaction is an example of an syn addition ?

4.A Hydroboration-Oxidation reaction is an example of an anti-addition ?

5. Carbocations can combine with a nucleophile, eliminate, or rearrange ?

6. A steroespecfic reaction will prdouce only a certain set stereoisomoers due to the reaction mechanisim. ?

Answer 1

a) True

Zaitsev's rule (or Saytzeff rule, Saytzev rule) is an empirical rule for predicting the favored alkene product in elimination reactions. The alkene formed in greatest amount is the one that corresponds to removal of the hydrogen from the β-carbon having the fewest hydrogen substituents

b) false

Markovnikov's rule describes the outcome of some addition reactions but not electrophilic adition reaction. the rule can be stated that the hydrogen atom is added to the carbon with the greatest number of hydrogen atoms while the X component is added to the carbon with the least number of hydrogen atoms.

c) true

Syn addition is the addition of two substituents to the same side of a double bond or triple bond, resulting in a decrease in bond order but an increase in number of substituents.

d) true

hydroboration–oxidation reaction is a two-step organic reaction that converts an alkene into a neutral alcohol by the net addition of water across the double bond. . Hydroboration–oxidation is an anti-Markovnikov reaction, with the hydroxyl group attaching to the less-substituted carbon.

e) true

carbocation can combine with a nucleophile, eliminate, or rearrange

f) false

stereospecificity is the property of a reaction mechanism that leads to different stereoisomeric reaction products from different stereoisomeric reactants, or which operates on only one (or a subset) of the stereoisomers.