105年hce_kmu — 有機化學

共 80 題 · 含 AI 詳解

#1 Rank the following monomers in order of increasing reactivity toward cationic po… › #2 What product would be obtained for the following reaction? › #3 Which two have the same molecular geometry? I. $CO_2$ II. $NO_2^\ominus$ III. $PF_3$… › #4 Which nitrogen(s) have more basic? › #5 Rank the acidity of the following compounds. › #6 What is the order of increasing acidity for the following compounds? › #7 Which of these substances contains both covalent and ionic bonds? › #8 Choose the correct product of the following reaction? › #9 How many monochloro substituted products $C_6H_{13}Cl$ you might obtain by react… › #10 There are some isomers of 4-t-butylcyclhexane-1,3-diol. Which isomer reacts read… › #11 Which of the following correctly describes a molecule that is achiral? › #12 Which of the following pairs are enantiomers? › #13 Consider the two energy diagrams Fig. I and Fig. II given below. Which of the fo… › #14 Find the energy cost of a 1,3-diaxial interaction for the following compounds, w… › #15 Which of the following species is the least nucleophilic? › #16 What is the correct structure for $\alpha$-D-glucopyranose? › #17 Which of the following is a correct representation of the amino acid below? › #18 In humans, most steroids function as: › #19 What is the IUPAC name of the following compound? › #20 How many $E$ configuration are there in the following compounds? › #21 If silver nitrate is converted into silver nanoparticles, the most possible proc… › #22 A compound with the following molecular formula contains two double bonds. What… › #23 When butane undergoes free radical bromination, the product mixture contains 98\… › #24 Which of the following is not a property of a protecting group? › #25 Which of the following carbonyl groups exhibits the highest wavenumber in infrar… › #26 Compound X has the molecular formula $C_{10}H_{12}O$. The IR spectrum of X has a… › #27 For the mass spectrum of compound Y, we found 3 lines in the molecular ion regio… › #28 Which of the following would not produce nuclear magnetic resonance? › #29 Which compounds have 3 signals in the $^{13}C$ NMR spectrum? › #30 Using a 300 MHz $^1H$ NMR instrument, if a H shows a triplet at $\delta$ 4.02, 4… › #31 Consider the reaction below, how many pairs of electrons are involved in this pe… › #32 Which of the following reaction types are pericyclic reactions? › #33 What is the order of decreasing reactivity towards nucleophilic acyl substitutio… › #34 Consider the elimination reaction: 2-bromohexane was treated with sodium methoxi… › #35 To answer the following question, consider the reaction below: The dehydration o… › #36 Which is addition reaction in the following reactions? › #37 Which of the following substrates will not form a Grignard reagent when treated… › #38 Which is the name reaction in the following reaction? › #39 What is the major product of the following reaction? › #40 Predict the structure of the expected product for the following reaction. › #41 What product would be obtained from the following reaction? › #42 Which structure for the compound A (formula $C_5H_8O$) that fit the following pr… › #43 Which of the following reactions is often called olefin metathesis? › #44 For the reaction shown below, the resulting stereochemistry of the expected prod… › #45 How would you prepare the following carbonyl compound from a nitrile? › #46 Which one is the reactant of the following reaction? › #47 Which is the best reagent for following reaction? › #48 An epoxide compound may undergo the ring-opening reaction with water to generate › #49 Show how you might use an annulation reaction to synthesize the following compou… › #50 Which of the following ethers can’t be prepared by a Williamson ether synthesis? › #51 Which of the following reagents is suitable for the following transformation？ I.… › #52 What product would be obtained from the following reaction? › #53 What is the product of this reaction? › #54 What is the major product would you obtain for the following reaction? › #55 Provide the structure of the major organic product in the reaction shown below. › #56 What product would be obtained for the following reaction? › #57 Please predict the product of the following reaction. › #58 Mescaline is a hallucinogenic alkaloid isolated from peyote cactus. Synthesize m… › #59 Which set of reagents will best convert 2,2-dimethylpropan-1-ol to 4,4-dimethylp… › #60 Compound A can make $Br_2/CCl_4$ become colorless. What is the structure of comp… › #61 The reaction of $Cl_2$ with a methyl radical has a positive $\Delta H^\circ$. Wh… › #62 Which structure corresponds to the trimer of $Me_2C=CH_2$ formed under condition… › #63 Remove a proton from the following structure to create the most reactive (least… › #64 The carbon marked by a dot (•) is $^{13}C$ isotope. Which structure below shows… › #65 Choose substituents X and Y (listed in order below) for the following compound s… › #66 Rank the degree of unsaturation in each of the following compounds. I. Cholester… › #67 This cyclic carbocation has two sets of degenerate pi-molecular orbitals. Choose… › #68 What product would be obtained for the following reaction? › #69 When 1-methyl-1-cyclohexene is respectively treated with the following reagent s… › #70 Predict the outcome of the following sequence of reactions. › #71 The following substrate is a starting material in the synthesis of compounds hav… › #72 Predict the structure of the hydrolysis product. › #73 In order to synthesize the final product shown below, predict when should a prot… › #74 Which of the following Diels-Alder reactions has the largest reaction rate const… › #75 What is the product of this reaction? › #76 What is the major product obtained from the following reaction sequence? › #77 What is the major product of the following reaction? › #78 Which of the following reactions is called Gabriel synthesis? › #79 What is the major product of the following triene to undergo the intramolecular… › #80 The following reaction involves an intramolecular Michael reaction followed by a… ›