1) which of the following additions to alkenes occur specifically in an ANTI fashion? a) addition...
20. Provide the reagents necessary to complete the following the following transformation. A. 1. BH3 THF2. H2O2. HO- B. H20, H2SO4 C. OsO4 H202 D. CH3CO3H E. 1. CH3CO3H 2. H, H20 21. Provide the major organic product of the reaction below. 10. 2. (CHS uraw the major organic product generated in the reaction below. Pay particular attention to and stereochemical detail. CH3 CH, KMnO4 (warm, conc.) CH, H 23. Give the structure of the alkene which would yield the...
Which of the following addition reactions are anti additions (lead to trans products)? (a) Br2 addition to an alkene (b) Catalytic hydrogenation of an alkene. (c) HBr addition to an alkene (d) OsO4 addition to alkene (e) All of the above Which of the following addition reactions are stereospecific? (a) Cl2 addition to a disubstituted alkene (b) HBr addition to a trisubstituted alkene (c) Radical addition of Cl2 to CH4 (d) Oxidation of a trisubstituted alkenes by using 03, Zn...
2. Which of the following addition reactions are anti additions (lead to trans products)? (a) Br2 addition to an alkene (b) Catalytic hydrogenation of an alkene. (c) HBr addition to an alkene (d) OsO4 addition to alkene (e) All of the above 3. Which of the following addition reactions are stereospecific? (a) Cl2 addition to a disubstituted alkene (b) HBr addition to a trisubstituted alkene (C) Radical addition of Cl2 to CH4 (d) Oxidation of a trisubstituted alkenes by using...
Alkene reaction and mechanisms practice exercise 1) O₃ 2) (CH3)2S 25) Treatment of cyclopentene with peroxybenzoic acid A) results in oxidative cleavage of the ring to produce an acyclic compound B) yields a meso epoxide C) yields an equimolar mixture of enantiomeric epoxides D) gives the same product as treatment of cyclopentene with Os04 E) none of the above 26) Provide a detailed, step-by-step mechanism for the reaction shown below. но Br2 na + HBT Br 27) Provide a detailed,...
Which of the following addition reactions are anti additions (lead to trans products)? (a) Br2 addition to an alkene (b) Catalytic hydrogenation of an alkene. (c) HBr addition to an alkene (d) OsO4 addition to alkene (e) All of the above
so i understand that halogenation can only occur by anti addition. that being said how can you add 2 halogens to eachother in an anti fashion when the double bond is located on the substiturnt of a ring. this was a problem in my textbook and the answer key gave that answer. secondly hydroboration - oxidation can only occur by syn additon. so how can you add two atoms in syn two a substituent of a ring ? i dont...
please help with any/all if you can! thanks! QUESTION 1 Select the correct product for the reaction shown below: 1) BH 3-THF 2) H2O2, OH contar a fon ranta moda nota O1A 2B 3C 4D 5E QUESTION 2 Select the step that DOES NOT occur in the mechanism of the hydroboration-oxidation reaction: A Nucleophilic attack B. Proton transfer Rearrangement of carbocation D. Migration of an alkyl group E Syn-addition across the double bond QUESTION 3 Select the statement that correctly...
Identify the expected major organic product generated from the reaction sequence shown. Provide the expected major organic product of the reaction sequence shown. What are the expected major products from the reaction sequence shown below? Which of the following alkene addition reactions occur(s) specifically in an anti fashion? A) hydroboration-oxidation B) addition of Br_2 C) addition of H_2 D) addition of H_2O in dilute acid E) both A and B For the reaction sequence shown, what it the expected major...
Which of the following reaction is a syn addition(s)? A. Hydroboration-oxidation of alkenes B. Hydrohalogenation reaction of alkenes C. Dihalogenation reaction alkenes D. Halohydrin formation reaction 7. Consider the three compounds below: 1. CH CH OCH CH, II. CH CH CH CH CH, M.CH, CH2CH2CH2OH The two most similar in boiling point are: A. I and II B . I and III C. II and III D. There is no way to judge since no boiling point is provided for...
Acid Catalyzed Hydration-treatment of alkenes with water in the presence of acid catalyst leads to the formation of alcohols. H2SO4/H2O > 150°C Mechanism Major Product Acid catalyzed dehydration goes through a carbocation intermediate. This means that the Markovnikov product is obtained when carbocation rearrangements do not occur. The need for excessively high temperatures makes this reaction of limited use in laboratory synthesis. Oxymercuration - Oxymercuration involves the addition of Hg to the alkene using mercury (II) acetate Hg(OAc) followed by...