PPT-EXPERIMENT 4 IDENTIFICATION OF ALDEHYDES

AND KETONES Both contain the carbonyl group CO which lends to their chief chemical and physical properties Examples of them include formaldehyde acetaldehyde propionaldehyde benzaldehyde. Aldehydes. The term Aldehyde come for the words . al. cohol . dehy. drogenation. . Preparation: Oxidation of primary alcohols according to the following equation:. Note: Oxidation can be considered as removal of hydrogens. Dr. Talat R. Al-Ramadhany. Introduction . Aldehydes are compounds of the general formula . RCHO. ;. Ketones are compounds of the general formula . RR´CO. . The groups R and R´ may be aliphatic or aromatic. . In General. Fragrant odors. Basic building block of housing materials. Hormones. Digestion. Vision. 2. In General. Carbonyl group. C=O. Aldehydes. RCH=O. Formyl. Ketones. RC=OR’. 3. Nomenclature. The Civet Cat is the original source of . civetone. , a sweet and pungent ketone used as a fixative in perfumery. Aldehydes and ketones are found in many fragrant odors of many fruits, fine perfumes, hormones etc. some examples are listed below.. ,-Unsaturated Aldehydes and Ketones. 18-8. Conjugated unsaturated aldehydes and ketones are more stable than their unconjugated isomers.. Enones, or . ,-unsaturated carbonyl groups, are stabilized by resonance.. Before you can learn about aldehydes and ketones, you must first know something about the nomenclature of carboxylic acids since many of the names of aldehydes and ketones are derived from the names of the corresponding carboxylic acids.. 17-4. Laboratory syntheses of aldehydes and ketones use four common methods.. Oxidation of alcohols:. Ozonolysis:. Hydration of the carbon-carbon triple bond y. ields enols that tautomerize to carbonyl compounds.. The Civet Cat is the original source of civetone, a sweet and pungent ketone used as a fixative in perfumery. Aldehydes and ketones are found in many fragrant odors of many fruits, fine perfumes, hormones etc. some examples are listed below.. 12 GeV electrons. 40% lin. Pol.. Uncollimated. Collimated. Coherent Peak. GlueX. A Proposal to Jefferson Lab PAC 40 . The GlueX Collaboration. Curtis A. Meyer, GlueX Spokesperson. Outline. Lattice QCD and the meson spectrum.. April 4/5/6, 2017. Course Outline. April 4/5/6. Experiment 9: Identification of Unknowns. . Solubility, Functional Groups, Reports. Infra Red Spectroscopy (IR, FTIR).. Reading assignment. : Experiment 10.. Do Now: Write the molecular formula for the two sugars on the right. Are they isomers?. General formula: R. . C. . H or RCHO. Carbonyl group . just like ketone except . always. . at end of aldehyde . Organic compounds. Functional group identification. Many organic compounds contain an atom or group of atoms that substitute for hydrogen or carbon in a basic hydrocarbon.. The atom or group of atoms is commonly referred to as functional group.. Carbonyl Compounds. Contain the carbonyl group . C=O. . Aldehydes: . R may be hydrogen, usually a carbon containing group. Ketones: . R contains carbon. Short. forms. Structures of Aldehydes . and Ketones. Shatha. I . Alaqeel. 108 . Chem. Learning Objectives. Chapter eight . discusses. . carbonyl . compounds. and . by the end of this chapter the students will:. Know the structural differences between aldehydes and ketones.