However, this is not always seen and often accounts of migratory aptitudes show fickle preferences.
2.
The migratory aptitude of the R-group is roughly tertiary > secondary ~ aryl > primary.
3.
However, most believed that what was governing preferential product formation involved the migratory aptitudes of competing carbons and / or steric control.
4.
Migratory aptitude made reference to the possibility that the preferred product of the reaction was the result of an initial stability of one carbon migrating in preference to another.
5.
However, Carlson and Behn did manage to report a significant breakthrough in the realm of sterics and migratory aptitudes as they relate to the TDR . As it might be expected based on electronic reasoning, the more highly substituted carbon should migrate preferentially to a less substituted carbon.
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