CISelect to DrawNaCNacetonitrile Draw the products of the two step reaction sequence shownbelow.Use a dash and/or wedge bond to indicate the stereochemistry ofsubstituents on asymmetric centers, where applicableکہاOHSOCl2pyridineQ

Step 1: Step 2: Step 3: Step 4:

Answered: CI Select to Draw NaCN acetonitrile…

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter14: Elimination

Section: Chapter Questions

Problem 40CTQ

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Alkenes 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.
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Question 5: Conformations The elimination shown below has a very large differenco in the rate of reaction that depends on the stereochemistry of the substrate. Please use chair conformations in the space below to explain the results shown in the box. Please provide a brief explanation of the observed reactivity difference in the second box. Chair conformations:
Please fill in the missing reactants, reagents or products in the following reactions. Indicate relative stereochemistry where it is necessary CI j)
Draw the organic product of the following reaction. CH3 m-CICgH,CO;H • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • If the reaction produces a racemic mixture, just draw one stereoisomer. • If more than one product is possible, only draw the major product. opy aste
Question 5: Conformations The elimination shown below has a very large differenco in the rate of reaction that depends on the stereochemistry of the substrate. Please use chair conformations in the space below to explain the results shown in the box. Please provide a brief explanation of the observed reactivity difference in the second box. Chair conformations:
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Predict the -elimination product(s) formed when each chloroalkane is treated with sodium ethoxide in ethanol. If two or more products might be formed, predict which is the major product.
Complete the following: Stereochemistry, enantio-, and regioselectivity are important. CrO3, H2SO4 a) OH Bromination of an alcohol (Sn2) type EtO₂C CO₂Et b) b) d) H3CO type NH2 a) b) H3CO type a) b) OH g) type CN CI h) acetone Swern Oxidation type type CO₂H type Доно i) Me3SICI, Imidazole OSiMe3 Et3N, CH2Cl2 Br type a) Mg°, THF Br j) b); H3O+ H2SO4 (H+) MeOH OMe type type
TReview TOpics] [References Draw a structural formula for the major product of the reaction shown. CH3 CH3CHCH=CH2 Show product steréochemistry IF the reactant alkene has both carbons of the double bond within a • Do not show stereochemistry in other cases. If the reaction produces a racemic mixture, just draw one stereoisomer. C P opy aste C.
Starting from the wedge-and-dash structure below (sighting down the indicated bond), rotate the back carbon to provide the structure in the conformation that will be capable of an E2 elimination. R/S stereochemistry is graded. H CI K H H3C |||| Drawing < |||| Q Atoms, Bonds and Rings Charges Tap a node to see suggestions. H H H H H Undo X Reset Remove Done Rotate

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CI Select to Draw NaCN acetonitrile Draw the products of the two step reaction sequence shown below. Use a dash and/or wedge bond to indicate the stereochemistry of substituents on asymmetric centers, where applicable کہا OH SOCl2 pyridine Q