PPT-Ethers & Epoxides

Ether Nomenclature Compounds that contain two organic groups attached to an oxygen atom General formula is 1 Common Names Name both groups attached to the oxygen in alphabetical order Add the word ether. CHEMISTRY Glycol ethers are produced by reacting one mole of an alcohol with one two or three moles of oxide ethylene or propylene The synthesis routes of two typical glycol ethers are shown below ESeries Example PSeries Example P Series Glycol Ethe 10ItiswidelyknownthatthefullestaccountgivenbyEinsteinoftheclaimthatSRhasthenatureofa`principle-theory'wasinanarticleonrelativitytheoryhewascommissionedtowritein1919forTheTimesofLondon(Einstein,1919).S 1 Phenolic Ethers Alkyl Phenolics Heterocyclic Ethers Larger PAH 500 600 700 800 900 Figure 1 Formation of biomass tars and example of compounds formed 9-4. Organic esters are derivatives of carboxylic acids.. Inorganic esters are the analogous derivatives of inorganic acids.. Organic and Inorganic Esters from Alcohols. 9-4. Alcohols react with carboxylic acids to give organic esters.. 9-6. Ethers are prepared by S. N. 2 reactions.. Ethers can be prepared by the reaction of an alkoxide with a primary haloalkane or sulfonate ester under S. N. 2 conditions.. The parent alcohol of the alkoxide can be used as the solvent, however other polar solvents are often better, such as DMSO (dimethyl sulfoxide) or HMPA (hexamethylphosphoric triamide).. . Ethers are relatively unreactive.. Ethers are often used as solvents in organic reactions.. Ethers oxidize in air to form explosive hydroperoxides and peroxides.. “Crown” ethers are useful as enhancers in nucleophilic substitution and other reactions. Structure. Ethers have two organic groups (alkyl, aryl, or vinyl) bonded to the same oxygen . atom.. R groups are identical = symmetrical ether. R groups are different = unsymmetrical ether. Oxygen is . The data contained in this publication is based on our current may affect processing and application of our product, the data does not relieve processors from carrying out their own investigations and Thiols. , . and ethers. Nomencalture. of alcohols. Use the end . ol. Examples. . Hydrogen bonding in alcohols and phenols. Alcohols and phenols form hydrogen bonds, and hence they have relatively high boiling points. This also makes the lower alcohols miscible with water. As the R group becomes larger, the solubility of alcohols in water decreases dramatically.. Epoxides. 1. Ethers and Their Relatives. An . ether. . has two organic groups (alkyl, aryl, or vinyl) bonded to the same oxygen atom, R–O–R. . Diethyl ether is used industrially as a solvent. Dr. . Shatha. I . Alaqeel. 108 . Chem. Learning Objectives. Chapter seven discusses the following topics and by the end of this chapter the students will:. . Know the structure of ethers. Know the different methods of naming ethers. (R-OH) and (R-O-R). Members. Smita Jirayingcharoen (Mudmee). Pattraporn Kheerinpharadorn (BB). Sumanas Chamneandamrongkarn (Punpun). Vetaka Prajakchaikul (Ting-Ting). Sidaporn Muangsiri (Kaimod). Alcohol. Crown ether is molecules containing H,C & O atoms , each oxygen atom is bound between two of the C atoms and arranged in a ring . They are based on repeating (-OCH2CH2-) derived from ethylene glycol (HOCH2CH2OH). Ethers and Their Relatives. An . ether. . has two organic groups (alkyl, aryl, or vinyl) bonded to the same oxygen atom, R–O–R. . Diethyl ether is used industrially as a solvent. Tetrahydrofuran (THF) is a solvent that is a cyclic ether .