reaction mechanisms

Preparing for the OAT? This Organic Chemistry lesson reviews two important high-yield topics: aromatic chemistry and the Wittig reaction. Understanding these reactions and how they are used in multistep synthesis problems is essential for success on the OAT. Dr. Jim Romano explains the...

Preparing for the DAT or OAT? This Organic Chemistry lesson reviews two important high-yield topics tested on both exams: aromatic chemistry and the Wittig reaction. Understanding how these reactions fit into multistep synthesis problems is essential for success on the DAT and OAT. In this...

Preparing for the OAT? Can you identify a disproportionation reaction? In a disproportionation reaction, one molecule is both oxidized and reduced in the same reaction. A common mistake is thinking the acid workup is part of the reaction mechanism. It isn't. The reaction is already...

Preparing for the OAT? Stereochemistry is one of the highest-yield Organic Chemistry topics on the OAT. In this video, Dr. Jim Romano explains key stereochemistry concepts that students must understand to solve OAT Organic Chemistry problems with confidence. This lesson emphasizes...

DAT Organic Chemistry Stereochemistry Explained | DAT Destroyer | OAT Destroyer | Dr. Jim Romano Preparing for the DAT? Stereochemistry is one of the highest-yield Organic Chemistry topics on the DAT. In this video, Dr. Jim Romano explains key stereochemistry concepts that students must...

In a disproportionation reaction, one molecule is both oxidized and reduced in the same reaction. A common mistake is thinking the acid workup is part of the reaction mechanism. It isn't. The reaction is already complete before protonation. The acid simply converts the carboxylate salt into...

Dr. Jim Romano explains one of the most misunderstood topics in Organic Chemistry: how to correctly use curved arrows in reaction mechanisms. Many DAT and OAT students memorize reactions but lose points because they don't understand what the arrows actually represent. In this lesson, you'll...

Which mechanism is operating to get the final product? Many students incorrectly eliminate SN2 as soon as they see a bicyclic system. The key detail is that the bromine is attached to a CH₂ group rather than directly to the bridgehead carbon. Check your answer before viewing Slide 2. If...

Understanding how and why electrons move is essential for success in DAT Organic Chemistry. In this video, Dr. Jim Romano explains how mechanism arrows work, what they represent, and how to avoid common mistakes that lead to incorrect answers. The DAT Destroyer and Math Destroyer form the...

Understanding arrow mechanisms is essential for DAT Organic Chemistry, yet many students struggle with how electrons actually move. In this video, Dr. Jim Romano explains how to follow electron flow correctly and avoid common mistakes. Most students get this wrong — see why below DAT...

Many students struggle with DAT Organic Chemistry because they try to memorize reactions instead of understanding reaction mechanisms. In this short video, Dr. Jim Romano explains how to approach DAT Organic Chemistry mechanisms using clear, step-by-step reasoning and DAT-style strategy. The...

Let us consider the molecule shown above. After OH⁻ attacks in step 1, how many additional mechanism arrows are required to justify the formation of the product? a) 2 b) 3 c) 4 d) 5 e) 6 f) 7 g) 8 Answer: B Dr. Romano noted that this transformation is another classic “arrow problem,”...

Organic Chemistry Mechanism Arrows Explained (Video) | DAT Destroyer | OAT Destroyer Over the years I’ve seen a lot of students struggle with mechanism arrows in Organic Chemistry. It’s one of those areas where once you understand why electrons move, everything else starts to make sense —...