Hyperconjugation not steric repulsion leads to the staggered s ...
而不是老教科书提到效应。
As steric hindrance of the aryl amine decreased and nucleophilicity increased, occurrence of the transfor-mation reaction increased and herbicidal activity of the product decreased.
芳胺空小,亲强,副反应容易发生,产物除草活低。
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