PPT-2 Transition metal-free catalytic hydrogenation of ketones

Katherine Jolley and Martin Wills Department of Chemistry The University of Warwick Coventry CV4 7AL UK Introduction Results and Discussion Conclusions and proposed reaction mechanism Hydrogenation is . 6 286 Relative Stability of Alkenes Based On Molar Heats of Hydrogenation H hyd 276 kcalmol H hyd 286 kcalmol Trans cis brPage 3br Relative Stability of Alkenes Based On Molar Heats of Hydrogenation 327 kcalmol 297 kcalmol 280 kcalmol 286 kcalmol 18-4. Alkylation of enolates can be difficult to control.. The alkylation of an aldehyde or ketone enolate is an example of a nucleophilic substitution reaction.. The alkylation of aldehydes and ketones is complicated by several unwanted side reactions.. 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.. E2C 2013, Budapest. Y. Jiang, R. . Kunjanpillai. , S. . Chakraborty. , . F. . Zhou. O. . Blacque. , T. Fox and H. . Berke. . Strategies . for Homogeneous . Carbon Dioxide Hydrogenations. Search . for. choline. . Receptors.. 3. . Therapeutic use in: smoking cessation and . neurodegenerational. diseases. .. Asymmetric Synthesis of the . Lupin. Alkaloids:. (-)-Cytisine, (-)-Sparteine, (+)-Anagyrine, and (+)-. 12-1. Because the C-C .  bond is relatively weak, alkene chemistry is dominated by its reactions.. The addition of a reagent, A-B, to give a saturated compound is the most common transformation of an alkene.. and . poisons. Rates of Reaction. Catalytic Converters. Exhaust fumes contain. CO – . due . to incomplete combustion of hydrocarbons. NO & NO. 2. – . N. 2. . in air is oxidised at high temperatures. Chemistry 335 Supplemental Slides: Interlude 1. 1. 1. Definition of Oxidation and Reduction. For practical purposes in organic chemistry, oxidation and reduction are defined as follows:. Oxidation:. . Triacylglycerols. Many soft margarines, stick margarines, and solid shortenings are produced by the partial hydrogenation of vegetable oils.. Learning . Goal . Draw . the condensed or line-angle structural formula for the products of a triacylglycerol that undergoes hydrogenation, hydrolysis, or saponification.. Why is:. Mn. 2 . (. aq. ) colorless. Cu. 2 . (. aq. ) less deeply blue colored than Cu(NH. 3. ). 4. 2 . Zn. 2 . (. aq. ) colorless. MnO. 4. -. deeply colored. W(CO). 6. colorless. Sigma Interaction Strength. . Purpose of this course – understanding the diagram below:. Fujimor. i. , Electronic structure of metallic oxides: band-gap closure and valence control, . J. . . Phys. Chem. . Solids . 53. (1992) 1595–1602.. 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. Dr. Satyanarayan Dhal. Lecture-24. Why Graphene ?. Discovery : 2004, . Geim. and . Nosovelov. at Manchester University. Extraordinary electronic, chemical, mechanical, thermal and optical properties. .