Chemistry 3B - Lecture 05: Aromatic Compounds

Chemistry 3B: Chemical Structure and Reactivity. Spring 2006. Professor Peter Vollhardt.

Chemistry 3B represents the second semester of the standard organic chemistry series at UC Berkeley. It covers conjugation, aromatic chemistry, carbonyl compounds, carbohydrates, amines, carboxylic acids, amino acids, peptides, proteins, and nucleic acid chemistry. Ultraviolet spectroscopy and mass spectrometry will be introduced.
Organic chemistry is a specific discipline within the subject of chemistry. It is the scientific study of the structure, properties, composition, reactions, and preparation of chemical compounds of carbon and hydrogen, which may contain any number of other elements, such as nitrogen,...

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[flach99]

you should see a person who's talking about what's boring him. its realy no better. chemistry is too wide to talk about a level without interest in it

[kidoleyangu]

This professor is amazing.Thanks for this work.

[shippudenkid23]

this is long



[wmitch29]

Love your textbook Dr. Vollhardt!

[tookie126]

wats the liquid inside the test tubes gennerally called?

[blackdragon7752]

To nicklinkzelda: I'm trying to wrap my head around it right now too, but apparently when cyclic sp2 hybridized compounds get large enough, they adopt a conformation that is not planar. In the cyclooctatetrene example, it does in fact adopt the boat conformation. Since it isn't planar, it is not aromatic.

[nicklinkzelda]

I know it has been 8 months since you asked this, but you should know by now that sp2 hybridized carbons are flat and would therefore be in neither the chair or the boat. You typically are only faced with chair and boat conformations when you have cycloalkanes.

[VargFarkas]

I can't get it why cyclooctatetrene is a boat andnot a chair?

[VargFarkas]

And is Cyclooctatetraene always a boat? Is it a exeption? Why not a chair I thought the chairs were more stable?

[VargFarkas]

where "n" is a natural number, not any number.

[waltercompany]

I'm studying chemistry and I use the textbook by Peter Vollhardt :-)

Great to see him!