Q 11-11-21 E-b

Question


Write the product you would expect from reaction of each of the following alkyl halides with (1)Na+-SCH3 and (2)Na+-OH  (green = Cl):

b) 


Step-by-Step Solution

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Answer


The reaction of an alkyl halide with Na+-SCH3 and Na+-OH, yields two elimination products



1Zaitsev’s rule

Zaitsev’s rule states that in an elimination reaction, the most stable product is one in which the alkene is more substituted. For example, a tetrasubstituted alkene is more stable than a disubstituted alkene.

2The product expected when alkyl halide reacts with Na +- SCH 3 and Na +- OH


b) The alkyl halide (substrate) is tertiary, and the nucleophiles given are basic. So, two elimination products (one is major and the other is minor) are expected. The major product has more substituted double bonds according to Zaitsev’s rule.


The reaction of an alkyl halide with Na+-SCH3 and Na+-OH