PPT-ALCOHOLS & PHENOLS Alcohols and Phenols

Alcohols contain an OH group connected to a a saturated C sp 3 They are important solvents and synthesis intermediates Phenols contain an OH group connected to a carbon in a benzene ring Methanol CH. YX = 0 1 o 2 = 1 2 o 3 henol, styrenated (96- O -- cresol) OHp US EPA, Office of Pollution Prevention and Toxics. Development of Chemical Categories, Chemical RightKnow Initiative. ht Thiols. , Phenols, . And Ethers. IUG, . Fall . 2013. Dr. . Tarek. . Zaida. 1. 1. Alcohols. Alcohols are derivatives of hydrocarbons in which 1 or more of the hydrogen atoms has been replaced by a hydroxyl (-OH) . 8-4. Methanol is commercially synthesized from . synthesis gas. , a mixture of CO and H. 2. :. A change of catalyst leads to the production of 1,2-ethanediol:. Ethanol can be prepared by the fermentation of sugars or the hydration of ethene:. Ar. -OH). Phenols . are compounds of the general formula . Ar. -OH, where . Ar. - is phenyl, substituted phenyl, or one of the other aryl groups. . I. Structure . and nomenclature:. Phenols . differ from alcohols in having the -OH group attached directly to an aromatic . In a phenol the OH group is directly attached to the benzene ring. . In a phenol the lone pair of electrons on the oxygen is delocalised with the electron charge cloud of the . arene. ring. . The delocalised bonding changes the reactivity of the OH group and the . Chapter . 13. Alcohols, Phenols, . Thiols. , and Ethers. Anesthesia is typically administered by a nurse anesthetist who provides care before, during, and after a medical procedure. A nurse anesthetist gives medications to keep a patient asleep and pain-free while monitoring the patient’s vital signs. , Ethers, Aldehydes, and Ketones. Anesthesia is typically administered by a nurse anesthetist who provides care before, during, and after a medical procedure. A nurse anesthetist gives medications to keep a patient asleep and pain-free while monitoring the patient’s vital signs.. Phenols are organic compounds with a hydroxyl group attached directly to an aromatic ring. They have the general formula . Ar. -OH. Examples of them include phenol, hydroquinone, resorcinol,. o. -cresol, . st. 1439 . Learning. . Objectives. By the end of this chapter the student will:. . know the structure of alcohol. Knew the different classes of alcohols.. Knew the nomenclature of Alcohols . Knew the physical Properties. . J. Princess . Gracia. , M.. Sc. .,M.Phil.,. Assistant Professor,. Department of . Chemistry,. Bon Secours College for Women, . Thanjavur. .. Introduction-. . Phenols also called as phenolics are a class of chemical compounds consisting of a hydroxyl group (-OH) bonded directly to an aromatic hydrocarbon group.. Lecturer . Luma. . Amer. Department of . Pharmaceutical Chemistry. /Collage of pharmacy . 2 . ed. . stage.. Identification of Phenols. phenols are stronger acids than water and. will dissolve in 5% . Department of Pharmaceutical Analysis. Chalapathi Institute of Pharmaceutical Sciences. The Structure of Benzene. Because each .  bond has two electrons, benzene has six  electrons.. In benzene, the actual bond length (1.39 . Dr.Baqer A. Al-Mayyahi. 1. Phenolic Resin. Introduction. Phenolic resins are obtained by the reaction of phenols with aldehydes. Both parent compounds, phenol and formaldehyde, are by far the most important components in commercial phenolic resin production . Kratzel A, Todt D, V’kovski P, Steiner S, Gultom M, Thao T, et al. Inactivation of Severe Acute Respiratory Syndrome Coronavirus 2 by WHO-Recommended Hand Rub Formulations and Alcohols. Emerg Infect Dis. 2020;26(7):1592-1595. https://doi.org/10.3201/eid2607.200915.