Concept explainers
(a)
Interpretation: A stepwise mechanism for the given reaction is to be drawn.
Concept introduction: Pinacol rearrangement is also termed as Pinacol-Pinacolone rearrangement. This rearrangement reaction is an acid catalyzed conversion of
(b)
Interpretation: The rearrangement product formed from
Concept introduction: Pinacol rearrangement is also termed as Pinacol-Pinacolone rearrangement. This rearrangement reaction is an acid catalyzed conversion of
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ORGANIC CHEMISTRY
- (a) Draw a specific organic reaction for the hydroboration-oxidation addition reaction of alkenes. (b) Also write the reagents involved in the reaction (c) and name and identify its major and minor product by writing its IUPAC name.arrow_forwardGive an IUPAC and common name for each of the following naturally occurring carboxylic acids: (a) CH3CH(OH)CO2H (lactic acid); (b) HOCH2CH2C(OH)(CH3)CH2CO2H (mevalonic acid).arrow_forward6) Which is the organic product for the following reaction? (a) (b) (c) (d) сон COOH ОН ОН COOH COOH KMnO4 H2Oarrow_forward
- (a) Provide the structures of two possible organic products. (b) Circle the major organic product. NBS hvarrow_forward6. Describe concisely a chemical test to distinguish between the following pairs of compounds. (a) n-pentanol and 3-methylpentan-3-ol (b) Ethanal dan pentanal (c) Phenol and benzoic acidarrow_forwardAlkenes can be hydrated to form alcohols by (1) hydroboration followed by oxidation with alkaline hydrogen peroxide and (2) acid-catalyzed hydration. Compare the product formed from each alkene by sequence (1) with those formed from (2). Q.) Propenearrow_forward
- (a) What is the major alkene formed when A is dehydrated with H2SO4? (b) What is the major alkene formed when A is treated with POCl3 and pyridine? Explain why the major product is different in these reactions.arrow_forwardAlkenes can be converted to alcohols by hydroboration-oxidation. (a) Draw the structure of the alcohol or alcohols formed in the reaction sequence. Clearly indicate stereochemistry by drawing a wedged bond, a dashed bond and two O Hint in-plane bonds per each chiral carbon. Draw hydrogen atoms that are connected to wedge-and-dash bonds.(b) Characterize the product or products of the reactions. The first step of the reaction, hydroboration, involves addition of BH, to the double bond, with -BH, attached to one carbon and hydrogen Be sure to draw hydrogens on oxygen, where applicable. attached to the other. Consider both Rings the regioselectivity and the Select Draw More Erase stereochemistry of this addition. H Diborane, B,H,, is a source of borane, BH,, and can be used 1. B2H6, interchangeably. Diglyme is a solvent. diglyme 2. H2О2, НО", The product or products of the reaction are characterized as being O S. O racemic. O achiral. O R,S (and/or S,R). O R. O S,S. O R.R. O diastereomers.arrow_forwardWrite equations for the reaction of pent-2-ene with the following:(a) H2 and Pd catalyst (b) Br2(c) HCl(d) H2O and H2SO4 catalystarrow_forward
- Write the reagent or draw structures of the starting material or organic product(s) in the following reactions. If more than one product is formed, identify the major product where possible. (a) (b) HO OH OH H2SO4 ? Cl₂ ? FeCl3arrow_forwardWhat happens when (write the reactions involved)arrow_forwardShow how to convert propene to this compound , using any inorganic reagents as necessary. Q.) Propanalarrow_forward
- Chemistry for Today: General, Organic, and Bioche...ChemistryISBN:9781305960060Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. HansenPublisher:Cengage Learning