Nomenclature of aldehydes Q Aldehydes are named by replacing the g terminal -e of the corresponding alkane name with -a/ The longest chain selected as the base name must contain the -cho group, and the-cHo carbon is always numbered as carbon 1 For more complex aldehyde in which the CHo group is attached to a ring the suffix-carbaldehyde is usedOrganic Chemistry Organic Chemistry Xiamen Xiamen University University Nomenclature of aldehydes „ Aldehydes are named by replacing the terminal – e of the corresponding alkane name with –al. The longest chain selected as the base name must contain the –CHO group, and the –CHO carbon is always numbered as carbon 1. „ For more complex aldehyde in which the –CHO group is attached to a ring, the suffix -carbaldehyde is used