Nomenclature

Determining R/S (2) – The Method of Dots

Determining R/S (2) – The Method of Dots

January 17, 2017

This post was co-authored with Matt Pierce of Organic Chemistry Solutions.  Ask Matt about scheduling an online tutoring session here. In our first post on the Cahn-Ingold-Prelog (CIP) Rules, we gave a broad overv…

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Alkene Nomenclature: Cis and Trans and E and Z

Alkene Nomenclature: Cis and Trans and E and Z

November 3, 2016

This post was co-authored with Matt Pierce of Organic Chemistry Solutions.  Ask Matt about scheduling an online tutoring session here. Earlier on our MOC series on cycloalkanes, we saw that a key feature of small …

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Organic Chemistry IUPAC Nomenclature Demystified With A Simple Puzzle Piece Approach

Organic Chemistry IUPAC Nomenclature Demystified With A Simple Puzzle Piece Approach

October 21, 2014

IUPAC Nomenclature Demystified with a Simple Puzzle-Piece Approach, by Leah Fisch Note from James: This is a guest post by Leah Fisch of Leah4Sci.com , an online resource for learning organic chemistry, MCAT preparat…

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Alcohols (1) – Nomenclature and Properties

Alcohols (1) – Nomenclature and Properties

September 17, 2014

In this next series of posts we are going to discuss the reactions of alcohols. As a functional group, alcohols are introduced fairly early in organic chemistry. Their reactions, however, are usually not covered until…

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Bridged Bicyclic Rings (And How To Name Them)

Bridged Bicyclic Rings (And How To Name Them)

August 14, 2014

In the last post we started our discussion of structures with more than one ring, using decalin as our key example. We saw how much the stereochemistry at the ring junction can affect the overall shape of the molecul…

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Cycloalkanes – Dashes And Wedges

Cycloalkanes – Dashes And Wedges

March 20, 2014

In the last post, we mentioned that one of the consequences of the fact that carbon can form rings is that small rings (less than 8 carbons) are so rigid that they can’t be turned inside out [video]. One of the …

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Homotopic, Enantiotopic, Diastereotopic

Homotopic, Enantiotopic, Diastereotopic

April 17, 2012

When you have two hydrogens attached to a single carbon, they can have three different types of relationships. We call them “homotopic”, “enantiotopic”, and “diastereotopic”. First …

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Weird Nomenclature In Carbonyl Chemistry

Weird Nomenclature In Carbonyl Chemistry

March 26, 2012

Making it through the chemistry of carbonyl derivatives (ketones, aldehydes, carboxylic acids, esters, and more) there are at least two “weird” nomenclature issues that repeatedly come up to baffle student…

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Don’t Be Futyl, Learn The Butyls

Don’t Be Futyl, Learn The Butyls

November 10, 2011

Nomenclature: what a headache. We’ve got all these accumulated years of jargon regarding chemical structures, and unless you learn the lingo, it can be confusing to follow what’s going on. Case in point: b…

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Oxidation and Reduction in Organic Chemistry

Oxidation and Reduction in Organic Chemistry

August 1, 2011

Iron smelting!  Photo credit: http://sclowcountryoutdoors.blogspot.com/2011/02/iron-smelting-at-acba.html In the beginning, the term actually made sense. When the alchemists and medieval metallurgists started doing …

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