CHEM 335 Organic Chemistry Final Exam 2026/2027 | 60+ Questions & Answers | Aldol, Diels-Alder, Grignard, Aromatic & Carbonyl Reactions

CHEM 335 Organic Chemistry Final Exam 2026/2027 is a focused 12-page final exam study resource containing 60+ questions, answers, reaction rules and reagent-based explanations. The document covers a broad range of high-yield organic chemistry topics, including aldol and Claisen condensations, enolate chemistry, malonic and acetoacetic ester synthesis, Grignard and Gilman reagents, Michael addition, amine synthesis, radical chemistry, alcohols and ethers, oxidation-reduction reactions, conjugated systems, Diels–Alder reactions, aromaticity, electrophilic aromatic substitution, aldehydes, ketones and carboxylic acids. The opening section concentrates on enolate and carbon–carbon bond-forming reactions. Students review aldol addition and aldol condensation, including formation of β-hydroxy carbonyl compounds and subsequent production of α,β-unsaturated carbonyl systems. The material distinguishes kinetic and thermodynamic enolate formation and proceeds to Claisen condensation, malonic ester synthesis and acetoacetic ester synthesis. These reactions are particularly important for multistep synthesis questions because they provide systematic methods for constructing new carbon–carbon bonds. These principles correspond to the treatment of enolate chemistry and carbonyl condensation reactions in standard references such as Clayden, Greeves and Warren's Organic Chemistry and McMurry's Organic Chemistry. The document then compares major organometallic and conjugate-addition reactions. Grignard reagents are associated with nucleophilic attack at carbonyl positions and 1,2-addition, whereas Gilman reagents and the Michael reaction emphasize 1,4-conjugate addition to α,β-unsaturated systems. Michael donors and acceptors are distinguished, helping students identify the nucleophilic and electrophilic partners required for conjugate addition. A further section covers amines, amino acids and synthetic routes to nitrogen-containing compounds. Students review azide synthesis, Gabriel synthesis and reductive amination, alongside the basic structural properties of amines and amino acids. The material connects reagents with transformations—for example, converting an alkyl halide to an azide followed by reduction to an amine, or transforming aldehydes and ketones into amines through reductive amination. The exam guide also reviews free-radical chemistry, alcohols, phenols and ethers. Radical topics include homolytic bond cleavage, fishhook-arrow notation and the initiation, propagation and termination stages of radical chlorination. Alcohol and phenol questions address hydrogen bonding, boiling points, water solubility and acidity, including the effects of resonance, induction and solvation. Ether nomenclature and Williamson ether synthesis are also included. Another high-value section compares important oxidizing and reducing reagents. Students review NaBH₄ and LiAlH₄/LAH as carbonyl-reducing agents, PCC as an oxidation reagent and reagents such as TsCl/pyridine, SOCl₂/pyridine and PBr₃ for converting hydroxyl groups into better leaving groups or related derivatives. The guide emphasizes recognizing the functional-group change produced by each reagent, an essential skill for reaction prediction and multistep synthesis. The material subsequently addresses conjugated π systems and pericyclic chemistry. HOMO and LUMO concepts are introduced alongside conjugated, cumulated and isolated systems and the relationship between increasing conjugation, orbital-energy gaps and absorption wavelength. Electrophilic addition under low- versus high-temperature conditions is related to kinetic 1,2-addition and thermodynamic 1,4-addition. The Diels–Alder reaction section covers the s-cis requirement, dienophile activation by electron-withdrawing groups, stereospecificity, endo preference and regioselectivity. Aromatic chemistry is another major examination area. Students review aromatic, antiaromatic and nonaromatic compounds, conjugation and Hückel's rule before moving into electrophilic aromatic substitution. Reactions include sulfonation, nitration and Friedel–Crafts alkylation, with attention to the electrophiles and catalysts required for each transformation. These concepts are foundational to modern organic chemistry and are treated extensively in established texts such as Solomons, Fryhle and Snyder's Organic Chemistry. The final portion focuses on carbonyl and carboxylic-acid chemistry. Aldehydes and ketones are compared in terms of structure and reactivity, while acetals and hemiacetals are reviewed as important carbonyl derivatives. The document additionally covers the Wittig reaction and Baeyer–Villiger oxidation, followed by carboxylic-acid structure, acidity, hydrogen bonding, boiling-point behavior and the influence of electron-withdrawing groups. Overall, the breadth of reactions makes this resource particularly useful for final-exam revision, reagent memorization, reaction prediction, mechanism review and multistep organic synthesis practice. Relevant Students: This document is most relevant to students enrolled in CHEM 335 or an equivalent Organic Chemistry II/intermediate organic chemistry course, especially those preparing for a cumulative final examination. It can also support students in chemistry, biochemistry, medicinal chemistry, pharmacy, pharmaceutical sciences, chemical biology and related programs requiring proficiency in organic reactions and synthesis. The uploaded document does not identify a university, so a university name should not be added until the institution can be verified. Keywords: CHEM 335, CHEM 335 final exam, CHEM , CHEM 335 exam questions and answers, organic chemistry final exam, organic chemistry questions and answers, organic chemistry reactions, organic chemistry synthesis, aldol addition, aldol condensation, Claisen condensation, kinetic enolate, thermodynamic enolate, malonic ester synthesis, acetoacetic ester synthesis, Grignard reagent, Gilman reagent, Michael reaction, conjugate addition, 1 2 addition, 1 4 addition, azide synthesis, Gabriel synthesis, reductive amination, amino acids, amines, radical reactions, radical chlorination, alcohol reactions, phenol acidity, Williamson ether synthesis, NaBH4, LiAlH4, LAH reduction, PCC oxidation, conjugated dienes, HOMO LUMO, Diels Alder reaction, aromaticity, Huckel rule, electrophilic aromatic substitution, aromatic nitration, aromatic sulfonation, Friedel Crafts alkylation, aldehydes and ketones, carbonyl chemistry, acetal formation, hemiacetal, Wittig reaction, Baeyer Villiger oxidation, carboxylic acids, organic chemistry study guide, organic chemistry exam preparation