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ORGANIC
CHEMISTRY II
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SPRING 2004
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Given below is the lecture and lab schedule for the first exam.Be aware that due to variations in the pace at which we cover material our actual schedule may vary.I have indicated below which sections from each chapter we will cover, although the sections may not be covered in the order listed.Note that some material listed for Chapter 9 we covered last semester; you may wish to review it but we won’t be going over it in class.Sections not listed may safely be ignored. I would highly recommend the following approach:
·read all of the indicated material for a particular chapter before we cover it in class
·after each class review the relevant sections in the book
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Week
of: |
Mon. |
Weds. |
Fri. |
Lab: |
Report: |
Due: |
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Jan.
19
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no
class
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Ch.
9
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Ch.
9
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No
lab.
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Jan.
26
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Ch.
10
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Ch.
10
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Ch.
10
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Start
Project 5.1
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Feb.
2
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Ch.
10
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Ch.
10
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Ch.
10
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Finish
Project 5.1; store product.
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Results
section;
discuss results in recitation Feb. 6 |
in
lab w/o Feb. 9
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Feb.
9
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Ch.
11
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Ch.
11
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Ch.
11
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Free-Radical
Bromination of Hydrocarbons (handout)
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yellow
pages
discuss results in recitation Feb. 13 |
end
of lab
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Feb.
16
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Ch.
12
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Ch.
12
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Ch.
12
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Nitration
of Alkylbenzenes (handout)
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Exam I, Chapters 9, 10, 11: Tuesday Feb. 17, 7:00 PM, Trumbower 130 |
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Feb.
23
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Ch.
12
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Ch.
12
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Ch.
12
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#22
Alkylation of 1,4-Dimethoxybenzene
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369
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Ch. 9: Electrophilic Addition Reactions of Alkenes
and Alkynes
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369
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The number of sites of unsaturation provides information
about the presence of p bonds
and rings
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370
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The reactions of cyclohexene illustrate the fundamental
processes of electrophilic addition
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372
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Addition of HX occurs via a carbocation intermediate
generated by the protonation of a p
bond
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373
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Addition of water occurs in the presence of a strong
acid that has a nonnucleophilic conjugate base
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374
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The addition of chlorine or bromine to a p
bond occurs by another type of cationic intermediate, a halonium ion
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378
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Oxymercuration provides an example in which a metal
ion is the electrophile
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380
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Additions to acyclic alkenes occur by the same processes
as those observed for cyclohexene
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384
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Reactions of methylcyclohexene illustrate the regiochemistry
associated with electrophilic addition processes
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384
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Addition of HX occurs to give the product with the
proton attached to the less highly substituted carbon – Markovnikov’s rule
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387
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Addition of bromine and chlorine occurs in a Markovnikov
fashion when water is the solvent
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390
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Oxymercuration further illustrates the generality
of Markovnikov addition, in this instance with a metal ion as the electrophile
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391
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Reactions of an electrophilic reagent with acyclic
alkenes also occurs by Markovnikov addition
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393
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A terminal alkyne reacts with electrophiles in sequential
reactions by Markovnikov addition
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394
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The Markovnikov addition of water to an alkyne is
catalyzed by mercury (II) ion with sulfuric acid and produces a ketone
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396
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Electrophilic addition to an internal alkyne gives
a mixture of products unless the addend or alkyne is symmetric
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397
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A diene undergoes 1,2- and 1,4-addition processes,
illustrating the concepts of kinetic versus thermodynamic control
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399
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Carbocations can add to alkenes to form dimers,
illustrating the Markovnikov addition of the electrophile R+ to a double
bond
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401
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Alkenes dimerize in biological systems by electrophilic
addition to create new carbon-carbon bonds
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403
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Polymerization occurs via carbocation addition to
an alkene in a Markovnikov fashion
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405
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Intramolecular addition of a carbocation to a p
bond produces a ring
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407
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Steroids are made by successive cyclization reactions
starting from squalene
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409
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Summary
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415
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Ch. 10: Concerted Addition Reactions of Alkenes
and Alkynes
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416
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Hydrogen adds stereospecifically to carbon-carbon
double or triple bonds in the presence of a metal catalyst
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419
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Hydroboration provides a useful way to functionalize
carbon-carbon double and triple bonds
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421
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Hydroboration is a stereospecific and regioselective
reaction occurring via a four-membered ring transition state
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424
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Organoboranes react with certain nucleophiles to
yield functionalized alkanes
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425
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Hydroperoxide ion converts an organoborane to an
alcohol
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431
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A cycloaddition process called the Diels-Alder reaction
is used to prepare six-membered rings
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433
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Molecular orbitals of a diene and dienophile must
have the proper symmetry to react
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438
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The regio- and stereoselectivity of the Diels-Alder
reaction is dependent upon the substitution pattern of the diene and dienophile
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440
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Ozonolysis of an alkene cleaves the carbon-carbon p
bond, yielding carbonyl-containing compounds
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442
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Potassium permanganate and osmium tetroxide react
with alkenes to form metalate esters, also by a formal [4+2] cycloaddition
process
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447
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An epoxide is formed by the reaction between a peracid
and an alkene
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454
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Summary
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465
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Ch. 11: Free Radicals: Substitution and Addition
Reactions
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466
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Chlorination of methane occurs via a radical chain
process
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468
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Bond dissociation energies can be used to calculate
or estimate free energy changes of radical reactions
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469
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Chlorination of alkanes leads to mixtures of isomeric
products
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473
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Bromination of an alkane is more selective than
chlorination
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474
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N-bromosuccinimide provides a low concentration
of bromine for the free-radical reactions of allylic and benzylic substrates
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477
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Allylic oxidation is an important biological process
for generating potent physiologically active compounds
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482
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Metal ions are used in several ways to generate
radicals in biological systems
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485
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An alkyne can be reduced by an alkali metal in liquid
ammonia
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486
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Hydrogen bromide adds to alkenes via a radical process
with apparent anti-Markovnikov regiochemistry
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489
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Addition of an alkyl radical to an alkene provides
a general method for the preparation of polymers
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491
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Copolymers are formed by the addition of radicals
to more than one monomer
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492
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Branched polymers result from hydrogen-atom transfer
processes
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499
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The cyclic pathway of arachidonic acid metabolism
produces prostaglandins via a radical ring-forming process
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501
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A tandem cyclization can occur when there is more
than one point of unsaturation
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503
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Enediynes are potent anticancer drugs that react
by forming a diradical that subsequently cleaves DNA
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506
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Summary
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