Understanding the Saytzeff Rule in Organic Chemistry

The Saytzeff Rule, also known as Zaitsev's Rule, is a guideline in organic chemistry that helps predict the outcome of elimination reactions. According to this rule, when an alkyl halide undergoes dehydrohalogenation (an elimination reaction), the more substituted alkene is generally formed as the major product. This means that the alkene with the greater number of alkyl groups attached to the carbon-carbon double bond will be the predominant product.

For example, in the elimination reaction of 2-bromobutane, the major product would be 2-butene rather than 1-butene because 2-butene has a more substituted double bond.