烷基是有机化合物中常见的基团，有机化合物分子中烷基的引入其电子效应究竟是供电子还是吸电子，多年来曾引起不少争论，各种有机化学教科书也说法不一，尽管近年出版的一些教材在注释中予以说明，但仍然对烷基诱导效应的基本定性没有明确，在概念理解上容易产生混乱。分子中? Alkyl is a common group of organic compounds. The introduction of alkyl groups in organic molecules, whether electron-donating or electron-withdrawing, has caused much controversy over the years. Various organic chemistry textbooks have also been mixed, although in recent years Some of the teaching materials published are illustrated in the notes, but the basic qualities of the alkyl-induced effects are still unclear and confusing in concept understanding. Molecule?