lab 6 n

Hydroboration of Alkenes vs. Alkynes. Addition of an alkylboranes to a carbon- carbon double bond ("hydroboration") followed by oxidation is a common way to alcohols, for example, addition of dimethylborane to 2,3-dimethyl-2-butene yields 2,3-dimethyl-2-butanol. Me₂BH + Me₂C=CMe₂- →→ Me₂CH-CMe₂OH The reaction is more general as borane also adds to carbon-carbon triple bonds. obtain structures and energies for reactants and transition states for addition of dimethylborane (Me₂BH) to both ethylene and acetylene. Which reaction has the lower activation energy? Offer an explanation for your result.

Free radical halogenation is used to replace one or more hydrogens on an alkane with one or more halogens (either chlorine or bromine). It is a substitution reaction. A student performs a free radical bromination on 3-methyl-pentane (5.88 g) to create the desired product of 3-bromo-3-methyl-pentane. The product mix, which hopefully contains almost all 3-bromo-3-methyl-pentane, is cleaned up by passing it through a gas chromoatograph, which separates out the 3-bromo-3-methyl-pentane from any undesired products made during the reaction (undesired products are created frequently in free radical halogenation). The initial product mix weighed 9.45 g; the purified 3-bromo-3-methyl-pentane weighed 7.21 g. What is the student's percent recovery?

4- Choose the correct reactants required to synthesize the following molecule. H3CO OCH 3 A. Acetone and methanal B. Acetone and methanol C. Formaldehyde and propanal D. Formaldehyde and propanol 5- What is the IUPAC name of the following compound? CI A. 6-Chloro-4-ethoxy-1-octanal B. 6-Chloro-4-ethoxyoctanal C. 6-Chloro-4-ethoxycyclooctanal D. 4-Ethoxy-6-chlorooctanal - What is the IUPAC name of the following compound? 0 Br. Br Cl A. 2,6-Dibromo-3-chloro-5,5-dimethylhexanone B. 2,6-Dibromo-3-chloro-5,5-dimethylcyclohexanone C. 2,6-Dibromo-5-chloro-3,3-dimethylhexanone D. 2,6-Dibromo-5-chloro-3,3-dimethylcyclohexanone

Fill-in the missing the reactant, reagent, or major product. 1. Hg(OAc)2 , H2O 2. NABH, Biology Environmental Science 1. OsO4, pyridinę 2. NaHSO3 , H2O OH LİAIH, 3,3-Dimethylbutan-2-ol

Organic chemistry : Aldehydes & Ketones Please solve and give all the answers to each of every questions given in the pictures below by today ASAP

hat is the missing reactant in this organic reaction? CH3 O [0] R CH3–CH=C—H specifically, in the drawing area below draw the condensed structure of R. f there is more than one reasonable answer, you can draw any one of them. If there is no reasonable answer, check the No answer box under the drawing area. Note: the organic equation above only shows the important organic reactant and product. Minor small-molecule reactants or products (like H₂O) are not shown. D

Reagents a. CeHsCHO b. NaOH, ethanol c. Pyrrolidine, cat. H* d. H2C=CHCN e. H30* f. LDA g. ELOC(=0)CO,Et h. BRCH2CH=CH2 Na* OEt, ethanol j. Br2, H* k. K* t-BuO 1. CH2(CO2Et)2 m. heat Select reagents from the table to synthesize this compound from cyclopentanone. Enter the letters of the chosen reagents, in the order that you wish to use them, without spaces or punctuation (i.e. geda). Submit Answer Try Another Version 1 Item attempt remaining

projector=1 5. 2-pentanol d. 2-methyl-2-butanol Ethanoic acid (vinegar) when diluted to low concentrations by water can be prepared from 15. ethene by a. reduction with H2, followed by reaction with a strong oxidizer b. addition of HCI, followed by reaction with H,O c. addition of H2O followed by reaction with a strong oxidizer d. addition of Br2, followed by reduction with H2 16. The primary product of the reaction below which uses excess HBr is which of the following? HBr C. Br Br Br Br b. d. Br Br Br Br Br Br 17. Select the compound with the highest boiling point at standard pressure. a. d. CH4 носн,сн,он b. е. CH 3CH 2CH 3 H3C-CH-CH3 он с. CH 3 CH 20H 18. One of the ingredients on a margarine container is listed as "polyunsaturated corn oil". This means that a. many of the carbon-c Page b. many of the polymer 3 l7tiple- urited

Organ Classifying organic reactions The following chemical equation is for an elimination reaction, where the important atoms, groups, and bonds involved have been highlighted for you: HO H H* + H-OH H Use the information provided to predict the missing organic product and draw its structure in the drawing area below. Make sure to use the same skeletal ("line") style for the structure as the rest of the equation. Explanation Check Click and drag to start drawing a structure. C + 2024 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Access

A. Complete and balance the following combustion reactions. Assume that each hydrocarbon is converted completely to carbon dioxide and water. 1. Propane + O2 → 2. Cyclohexane + 02→ 3.2-Methylpentane + O2 → B. Following are structural formulas and heats of combustion of acetaldehyde and ethylene oxide. Which of these compounds is the more stable? Explain. CH-CH H,C-CH2 Acetaldehyde -1164 kJ (-278.8 kcal)/mol Ethylene oxide -1264 kJ (-302.1 kcal)/mol

13. Please help me answer this organic chemistry question

HW - ORG CHEM please illustrate answer onto image

Pd/C, H2 a. Propylcyclohexane O b. Propylbenzene OC. Benzoic acid O d.1-propenyl cyclohexane

Please help me check if the information below is correct for both the types of reactions and the special rules or laws to predict predominant products for alcohols. If not please insert the correct information. Please make the information in jot notes.   TYPES OF REACTIONS ALCOHOL:   Dehydration: This is a reaction where an alcohol loses a water molecule to form an alkene. For example, when ethanol is treated with an acidic catalyst, such as sulfuric acid, it undergoes dehydration to form ethene (CH2=CH2) and water.   Oxidation: In this reaction, an alcohol is converted to either a carbonyl compound or a carboxylic acid. For example, primary alcohols can be oxidized to aldehydes or carboxylic acids, while secondary alcohols can be oxidized to ketones. Tertiary alcohols are not oxidized under normal conditions.   Esterification: This reaction involves the formation of an ester from an alcohol and a carboxylic acid in the presence of an acid catalyst. For example, when ethanol is…

What is C nissing reactant in this organic reaction? Sovve OH R H A + H₂O Specifically, in the drawing area below draw the skeletal ("line") structure of R. If there is more than one reasonable answer, you can draw any one of them. If there is no reasonable answer, check the No answer box under the drawing area. Click and drag to start drawing a structure. ĊĊ × c+