When deciding between 1,2-addition, 1,4-addition and the major reaction pathway, there'susually an obvious correct answer.TrueFalse Consider the mechanism for 1,2 and 1,4 addition reactions. If the cation intermediate is the samein energy on the reaction coordinate diagram, how do different products form selectively?Alkene stability dictates the reaction.Reaction conditions control which product is formed.The transition state: once the new bonds start to form, the cations are no longer in resonanceand the transition states become different in energy.Activation energy distinguishes the products.

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en deciding between 1,2-addition, 1,4-addition and the major reaction pathway, there's ually an obvious correct answer. True

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter13: Substitution

Section: Chapter Questions

Problem 2E

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Concept explainers

Designing a Synthesis

Organic synthesis is a branch of chemical synthesis that involves the planned construction of organic compounds/molecules from smaller units that possess functional groups. Friedrich Wöhler was the first scientist who designed the synthesis of an organic compound, urea from inorganic starting materials silver cyanate with ammonium chloride via a simple, one-step synthesis.

Question

When deciding between 1,2-addition, 1,4-addition and the major reaction pathway, there's
usually an obvious correct answer.
True
False

Consider the mechanism for 1,2 and 1,4 addition reactions. If the cation intermediate is the same
in energy on the reaction coordinate diagram, how do different products form selectively?
Alkene stability dictates the reaction.
Reaction conditions control which product is formed.
The transition state: once the new bonds start to form, the cations are no longer in resonance
and the transition states become different in energy.
Activation energy distinguishes the products.

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