Recent Tutoring Session Reviews
"We covered aldol reaction, Claisen condensation, Dieckmann reaction, Michael addition and Robinson annulation. We worked through several sample problems to learn how to recognize the products of these reactions. I will send some additional practice problems to work on."
"The student and I went through concepts from chapter 16 concerning carboxylic acids and their derivatives. We especially focused on the pattern of the reactions that these groups undergo and how to predict what a product should look like based off the structure of the reactants. She has fallen a bit behind in her reading compared to where her class is lecturing at, so I assigned her chapter 17 to get through on her own by the time we have our next session. We will go through it together then."
"We went over acidity, basicity of alpha carbons. Also, we covered keto enol conversions in acidic and basic conditions. Also aldol condensation reactions and mechanisms. Student had a great attitude. She will continue to practice for her upcoming exam. We spoke about various study skills, using whiteboards, and note taking."
"Student and I are preparing for her upcoming exam this Tuesday. We reviewed stereochemistry, how SN1, SN2, E1, E2 reactions are driven by the use of either a polar protic or polar aprotic solvent. How to determine stereochemistry and using Lindlar catalysts always produces a -cis addition because of the metal catalyst. The differences between chiral and achiral carbon centers, and how stereochemistry can change to chiral centers after a reaction occurs. We discussed the reaction mechanism of radical reactions. A partial epoxide bond is formed from the alkene attacks the Br2, which is then broken when the other bromine radical breaks the epoxide bond to form either a anti or syn addition."
"Test review over radical halogenation, Sn1, Sn2, rearrangements, mechanisms, stereochemistry, determining R and S, enantiomers, diastereomers, substitution leaving group strength, factors that contribute to Sn1 vs. Sn2 such as solvent, nucleophile strength, steric factors, etc."
"During our session, we discussed several new topics, such as adding carbons via the acetylide ion reacting in an SN2 fashion with an alkyl halide, forming an alkyne via double elimination, formation of a dihalide from an alkene, halohydrin formation from an alkene and the carbocation mechanism. We first looked over an NMR/IR spectroscopy question, then went onto the more difficult synthesis questions. Here, I tried to show the student the thought process one would need to go through in order to be able to successfully complete the synthesis-type problems on an exam. She was quite hesitant when we first started synthesis, but after working backwards, mentally going through all the reactions we've covered and proceeding step by step, I saw that she had gained some confidence towards the end. I gave her a synthesis question I had made, as well as a few other reactions involving alkenes for her to solve in her own time."
"We reviewed the common mechanism for carboxylic acids and derivatives, the addition-elimination reaction. I encourage thorough review of this mechanism, including drawing it out multiple times to aid in memorization. While there are several other mechanisms that will be important in this unit, the addition-elimination mechanism is the most prominent, and is the basis for many of these other mechanisms."
"The student and I went over the test that he took recently. It was the highest score he scored on a test, so it was encouraging for the student to see that he has improved tremendously. We then started material on aldol condensation reactions. He was still a little confused about the kinetic vs. thermodynamically controlled products, which was an essential concept for choosing condensation reactions. He seems to now have a good grasp on these concepts. Tomorrow, we'll be going over material he has covered and start preparing for the quiz on Thursday."
"We discussed stereochemistry, chirality, enantiomers, optical activities, and also Gibbs free energy. We did lots of examples on each section and the student was able to solve all the problems alone using logical methods."
"We covered aldehydes and ketone reactions. she understand the concepts well, and it was just seeing the problems multiple times that made such a difference. I am confident with the work we did and her seeing the mechanisms that she will do well on the material."
"We covered substitution and elimination - I went over a step-by-step process from my own textbook about how to tell what kind of reaction will take place (SN1/SN2, E1/E2). We went through several problems on a homework page the student provided, to illustrate the process. I will email her the process from my textbook."
"Evaluated grasp of concepts covered so far in Orgo2. Focused on aromaticity and the first month of the semester. Scheduled next session to review enols and enolates, for her test in 8 days. Student needs practice writing resonance structure. She will practice these for next session, Monday at 8AM."