A 3-Step Method For Thinking Through Synthesis Problems
…with an advanced practice problem they were struggling with. Here’s the problem. I really hope this wasn’t for a take home exam or anything. I want to show an example…
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The World’s Cheapest Molecular Model Kit
…use your hands. Let’s say you’re given this problem: pretty typical for an Org 1 midterm. While the silence of the exam hall is punctuated by the popping of a…
Read moreIntroduction to Free Radical Substitution Reactions
…a few of the less common (but still important) reactions you learn in organic chemistry 1. We talked about rearrangements last time: today let’s talk about free-radical substitution, and leave…
Read moreLearning vs. Memorization In Organic Chemistry
“Learn the concepts! Don’t memorize!”. It’s one of the most common sentences found in the many examples of instructors’ essays on “How to Succeed in Organic Chemistry”. But what does…
Read moreElectrocyclic Reactions
…electrocyclic ring-opening of cis-3,4-dimethylcyclobutene the trans,trans-diene is formed instead of the cis-, trans- product we observed under “thermal” conditions. Also note that trans-3,4-dimethylcyclobutene gives the cis-,trans- product under photochemical conditions!…
Read moreWhere Memorization Helps in O-Chem
…comparative anatomy lab with a dead cat, shark, salamander and sea lamprey in an effort to cram almost 500+ different pieces of information into his skull for an exam this…
Read moreBredt’s Rule (And Summary of Cycloalkanes)
…communication (Ref #4) provides more details on the synthesis and reactivity of the ‘Anti-Bredt’ olefin, bicyclo[3.3.1]non-1-ene. Bredt Compounds and the Bredt Rule Dr. Gert Köbrich Angew. Chem. Int. Ed. 1973,…
Read moreDiazomethane (CH2N2)
…on carbon to give H3C-N2(+). This is an example of a diazonium compound, which you may have encountered if you’ve covered the Sandmeyer and related reactions. Like most diazonium compounds,…
Read moreThionyl Chloride (SOCl2)
…character. It is often written as S(+)-O(-) to reflect the highly polar nature of this bond. So although you may see this mechanism written, it is an open question as…
Read moreOrganic Chemistry Study Tips: Super-Detailed Advice
…molecules (you draw them in, and use the ‘name molecule feature’ and it tells you the IUPAC nomenclature. —- I use Yahoo Answers and chemicalforums.com (the organic section) when I…
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