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Carbocation Stability and Ranking

October 19, 2016 By Leah4sci 32 Comments

Carbocation Stability and Ranking Tutorial by Leah4Sci

Carbocations arise so frequently in Organic Chemistry that recognizing them must become second nature. After reading this tutorial, you should be able to eyeball a molecule and determine where a carbocation is likely to form as well as its potential stability. This will help you master carbocation intermediate reactions down the line including Markovnikov alkene addition […]

Filed Under: Organic Chemistry Basics Tagged With: allylic, carbocation, carbocation rearrangement, resonance

Phenol Resonance and Acidity Organic Chemistry Video

March 29, 2019 By Leah4sci Leave a Comment

Alcohols Resonance & Acidity of Phenol by Leah4sci

Phenol is a unique alcohol due to having a benzene ring and associated resonance. This video walks you through phenol resonance structures to help you understand how resonance impacts its acidity. Examples include comparing phenol to acetic acid as well as the impact of substituents on the ring like nitrophenol. (Watch on YouTube: Phenol Resonance/Acidity. Click […]

Filed Under: Alcohol Reactions Tagged With: Alcohol, resonance

Resonance Trick Ortho Meta Para Addition EAS Intermediates

March 27, 2014 By Leah4sci 17 Comments

EAS resonance for ortho meta and para substituents

EAS Series: Video 10 Electrophilic Aromatic Substitution gets more difficult when the starting molecule is a substituted benzene. Not only do you have to know the reaction. You also have to know how the substituent will direct the incoming electrophile, and if the substituent will slow down (deactivate) or speed up (activate) the overall reaction. […]

Filed Under: Electrophilic Aromatic Substitution Tagged With: EAS, electrophilic aromatic substitution, resonance

EAS Mechanism and Sigma Complex Resonance Video

January 18, 2015 By Leah4sci Leave a Comment

EAS Series: Video 2 The Electrophilic Aromatic Substitution reaction starts when one of the pi electrons on the benzene rings breaks as it reaches for the super electrophile. While this is similar to alkene reactions AT FIRST GLANCE the remainder of this mechanism is very different and unique. The sigma complex intermediate is capable of […]

Filed Under: Electrophilic Aromatic Substitution Tagged With: EAS, electrophilic aromatic substitution, resonance

Resonance Structures of Benzene

October 13, 2016 By Leah4sci 2 Comments

Benzene Resonance step by step in Video Tutorial Series by leah4sci

Benzene is a unique molecule when it comes to resonance structures. This video will show you how to draw the ‘circle’ of resonance for benzene, as well as resonance intermediates for substituted aromatic compounds including Electron Donating Groups EDG which resonate into the ring and Electron Withdrawing Groups EWG which cause resonance out of the ring. […]

Filed Under: Resonance Tagged With: benzene, resonance, Resonance Structures

Resonance Effect on Acidity in Organic Chemistry

February 6, 2015 By Leah4sci 12 Comments

effect of resonance on ranking acids and bases in organic chemistryvideo

Video 5 in the acid/base tutorial video series shows you how to use conjugate base resonance to determine the strength or stability of conjugate bases. If you can logically understand how resonance effects stability you’ll have an easier time determining acidity of neutral starting acid molecules. (click HERE to watch this video on YouTube.  Catch […]

Filed Under: Acids and Bases Tagged With: acid base, acids bases, CARIO, resonance

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Orgo Syllabus Companion
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Alkene Reactions Overview Cheat Sheet – Organic Chemistry

The true key to successful mastery of alkene reactions lies in practice practice practice. However, … [Read More...]

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KET Keto enol tautomerization reaction and mechanism leah4sci

Keto Enol Tautomerization Reaction and Mechanism

Keto Enol Tautomerization or KET, is an organic chemistry reaction in which ketone and enol … [Read More...]

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