CHAPTER 5 STRUCTURE AND PREPARATION OF ALKENES ELIMINATION REACTIONS lkenes are hydrocarbons that contain a carbon-carbon double bond. A car bon-carbon double bond is both an important structural unit and an important functional group in organic chemistry. The shape of an organic molecule is infl enced by the presence of this bond, and the double bond is the site of most of the chem- ical reactions that alkenes undergo Some representative alkenes include isobutylene(an industrial chemical), a-pinene(a fragrant liquid obtained from pine trees), and farnese (a naturally occurring alkene with three double bonds). CH3 CH3)2C=CH, Isobutylene Farnesene (used in the production (a major constituent (present in the waxy coating of synthetic rubber) turpentine) found on apple skins) his chapter is the first of two dealing with alkenes; it describes their structure, bonding, and preparation. Chapter 6 discusses their chemical reaction 5.1 ALKENE NOMENCLATURE We give alkenes IUPAC names by replacing the -ane ending of the corresponding alkane with -ene. The two simplest alkenes are ethene and propene. Both are also well known y their common names ethylene and propylene 167 Back Forward Main MenuToc Study Guide ToC Student o MHHE Website167 CHAPTER 5 STRUCTURE AND PREPARATION OF ALKENES: ELIMINATION REACTIONS Alkenes are hydrocarbons that contain a carbon–carbon double bond. A car￾bon–carbon double bond is both an important structural unit and an important functional group in organic chemistry. The shape of an organic molecule is influ￾enced by the presence of this bond, and the double bond is the site of most of the chem￾ical reactions that alkenes undergo. Some representative alkenes include isobutylene (an industrial chemical), -pinene (a fragrant liquid obtained from pine trees), and farnesene (a naturally occurring alkene with three double bonds). This chapter is the first of two dealing with alkenes; it describes their structure, bonding, and preparation. Chapter 6 discusses their chemical reactions. 5.1 ALKENE NOMENCLATURE We give alkenes IUPAC names by replacing the -ane ending of the corresponding alkane with -ene. The two simplest alkenes are ethene and propene. Both are also well known by their common names ethylene and propylene. Isobutylene (used in the production of synthetic rubber) (CH3)2C CH2
-Pinene (a major constituent of turpentine) CH3 H CH3 CH3 Farnesene (present in the waxy coating found on apple skins) Back Forward Main Menu TOC Study Guide TOC Student OLC MHHE Website