ORGANIC CHEMISTRY
ORGANIC CHEMISTRY
6th Edition
ISBN: 9781260826791
Author: SMITH
Publisher: MCG
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Chapter 18, Problem 69P
Interpretation Introduction

Interpretation: A stepwise mechanism for the given reaction is to be drawn.

Concept introduction: Acetals are the groups in which carbon atom is bonded with two OR groups through single bonds. They are used as protecting groups for aldehydes and ketones as they are stable enough in neutral to strong basic condition.However, they are unstable in acidic media, and dissociates into corresponding alcohol and carbonyl compound. This reaction is reversible.

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90. Draw the stereoisomers obtained from each of the following reactions: a. H₂ b. H₂ C. H₂ Pd/C Pd/C Pd/C
36. The emission spectrum below for a one-electron (hydrogen-like) species in the gas phase shows all the lines, before they merge together, resulting from transitions to the first excited state from higher energy states. Line A has a wavelength of 434 nm. BA Increasing wavelength, λ (a) What are the upper and lower principal quantum numbers corresponding to the lines labeled A and B? (b) Identify the one-electron species that exhibits the spectrum.
f) The unusual molecule [2.2.2] propellane is pictured. 1) Given the bond length and bond angles in the image, what hybridization scheme best describes the carbons marked by the askerisks? 2) What types of orbitals are used in the bond between the two carbons marked by the askerisks? 3) How does this bond compare to an ordinary carbon-carbon bond (which is usually 1.54 Å long)? H₂C H₂C CH2 1.60Å ハ C. * CH₂ H₂C * C H₂ 120°

Chapter 18 Solutions

ORGANIC CHEMISTRY

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