問題詳情
54.Which of the following phrases are not correctly associated with SN1 reactions?1.Rearrangements possible2.Rate affected by solvent polarity3.Strength of nucleophile important in determining rate4.Reactivity series tertiary > secondary > primary5.Proceed with complete inversion of configuration
(A)3,5
(B)1,5
(C)2,3,5
(D)3 only
(E)4,5
(A)3,5
(B)1,5
(C)2,3,5
(D)3 only
(E)4,5
參考答案
無參考答案
內容推薦
- The solvoysis reactions of optically active halides generally proceed with(A)Complete racemizatio
- The bimolecular subsittution reactionCH3Br + OH- →CH3OH + Br-is represented by the kinetic equati
- A compound having a molecular formula of C20H36 is inert to catalytic hydrogenation. Which of the
- The strongest evidence for the formation of a bridged bromonium ion as an intermediate in the add
- Which of the following is least able to serve as a nucleophile in a chemical reaction?(A)Br-(B)OH
- Treatment of 2-methyl-2-butene with HBr in the presence of peroxide yields(A)A primary alkyl brom
- The product from the reaction of 1-pentene with Cl2 in H2O is named:(A)1-Chloro-2-pentanol (B)2-C
- Markovnikov’s rule “works” because:(A)The most stable transition state is the one leading to the
- In the traction of a reagent such as HBr with an alkene, the frist step of the reaction is theto
- An alkane with a molecular formula C6H14 reacts with chlorine in the presence of light and heat.
內容推薦
- Which of the following statements is true concerning pKa?(A)The larger the pKavalue, the weaker t
- Referring to the following equilibrium (R=alkyl group) (A)K < 1 ; the equilibrium would lie th
- 如圖(十二)，圖上有B、C兩點 為圓的兩切線。若 將圓分成兩弧，且其中一弧的長為圓周長的1/10，則∠BPC的度數為何？(A)108(B)120(C)144(D)162
- (28~30)【題組】Why did Chief Seattle ask “Every part of the Earth is sacred to my people?”(A) Becaus
- 如圖(十六)，有兩全等的正三角形 ABC、DEF，且D、A 分別為 △ABC、△DEF 的重心。固定D 點，將 △DEF 逆時針旋轉，使得A 落在 上，如圖(十七)所示。求圖(十六)與圖(十七
- Which alkyne yields butanoic acid (CH3CH2CH2CO2H) as the only organic product upon treatment with
- 下列何者是 22x7 - 83x6 + 21x5 的因式？(A) 2x + 3(B) x2(11x - 7)(C) x4(11x - 3)(D) x6(2x + 7)
- Which of the following produces a significant amount of acetylide ion on reaction with acetylene?
- Hydrogenation of cyclohexene releases 120kJ/mol of heat. Which of the following most likely repre
- Arrange the following intermediates in order of decreasing basicity (strongest→weakest):(A)B >
- 【題組】What is the smoking iron horse?(A) The beasts.(B) The passing train.(C) The buffaloes.(D) Th
- 圖 ( 十三 ) 的長方體與下列選項中的立體圖形均是由邊長為1 公分的小正方體緊密堆砌而成。若下列有一立體圖形的表面積與圖 ( 十三 ) 的表面積相同，則此圖形為何？ (A) (B) (C
- (31~33) 【題組】What is the main idea of the article?(A) All work and no play makes Jack a dull boy.
- 【題組】Who may have the same idea with Chief Seattle?(A) Mr. Macron, “We can’t do nothing but still
- 【題組】What is trauma?(A) Parents who are prisoners.(B) A person who uses power to harm those who a
- 【題組】Which of the following is not true?(A) Sesame Street first started being on air in the late
- (34~36)【題組】Why did Kobe love basketball so much?(A) Because basketball made him alive.(B) Becaus
- Give the major product of the following reaction: [E]-2-pentence+ CH2I2/Zn(Cu)→ ?(A)cis-1-Ethyl-2
- Which of the following would yield a secondary alcohol after the indicated reaction, followed by
- Which of the esters shown, after reduction with LiAlH4 and aqueous workup, will yield two molecul
- For the following reaction, select the statement which best describes the situaton. RCH2OH + (C5
- Which of the following alcohols gives the best yield of diakyl ether on being heated with a trace
- The most effective pair of reagents for the preparation of tert-butyl ethyl ether is:(A)Potassium
- Heating a particular ether with HBr yielded a single organic product. Which of the following conc
- Ionization energies are(A)always negative (B)always positive (C)usually positive but sometimes ne