KMnO4 can oxidizine an alkene into a diol before cleavage of cleavage of the C-C bond....
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KMnO4 can oxidizine an alkene into a diol before cleavage of
cleavage of the C-C bond....
KMnO4 can oxidize an alkene into a diol before cleavage of the C-C bond. If the...
KMnO4 can oxidize an alkene into a diol before cleavage of the C-C bond. If the reaction was stopped at the diol stage (as suggested in Chapter 8 of Wade), what diols would be produced from the Z and E isomers of 2-octene?
KMnO4 can oxidize an alkene into a diol before cleavage of the C-C bond. If the...
KMnO4 can oxidize an alkene into a diol before cleavage of the C-C bond. If the reaction was stopped at the diol stage, what diols would be produced from the Z and E isomers of 2-heptene? Name them.
Write down your qualitative observations in the table below. Include relevant details such as color changes,...
Write down your qualitative observations in the table below. Include relevant details such as color changes, precipitation, etc. (10 marks) Naphthalene n-heptane 1-octene Unknown Solubility in H20 (room temp.) Not soluble Solubility in H20 (high temp.) Soluble Solubility in cyclohexane (room temp.) Not soluble Br2 test Orange colour persists Br2 test (hv) Orange colour persists KMnO4 test Purple colour persists AlCl3/CHCl3 test Blue coloured solid 1. What class of compounds (alkene, alkane or aromatic) does your unknown belong to? (10...
We learned that to create vicinal diols from alkenes, the cis-1,2-diol or trans-1,2 diol required very...
We learned that to create vicinal diols from alkenes, the cis-1,2-diol or trans-1,2 diol required very different reagents. This isn't always the case and one notable reaction that defies this convention is the Prévost reaction! (4 points) To make the cis-diol, we typically use osmium tetroxide (catalytic amounts!). What other reagent combination would work for this particular transformation? a. OH OH (rac b. (4 points) To make the trans-diol, what reagent combination would be employed? ?? 1F2 OH (4 points)...
2) Diol 1 was prepared in one step (one pot - includes work-up) from what alkene?...
2) Diol 1 was prepared in one step (one pot - includes work-up) from what alkene? What reagents would you use to carry out this reaction? ОН OAc ??? AcO ОН 1
In an addition reaction to an alkene, the pi bond plays the role of nucleophile electrophile...
In an addition reaction to an alkene, the pi bond plays the role of nucleophile electrophile leaving group Select the product that results from the anti-Markovnikov/syn addition of H and OH to the following alkene. I II III IV What is the IUPAC name for the molecule shown below? 3-(l-butynyl)pentane 5-ethyl-3-octyne 3-ethyl-4-heptyne 5-ethyl-3-heptyne What would be the major product obtained from the addition of HBr to 2-methylpentene? 1-bromo-2-methylpentane 2-bromo-2-methylpentane 3-bromo-2-methylpentane 1-bromo-2-methylpentene What is the reaction product when 4-methyl-2-pentyne is reacted...
Alkene reaction and mechanisms practice exercise 1) O₃ 2) (CH3)2S 25) Treatment of cyclopentene with peroxybenzoic...
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,...
A. One mechanism of fragmentation is loss of a neutral radical by cleavage of a bond...
A. One mechanism of fragmentation is loss of a neutral radical by cleavage of a bond from which one electron has been lost. What is the m/z ratio of the most stable cationic fragment that can be generated from dexchlorpheniramine by this mechanism? Show the structure of the fragment and discuss charge stabilization. B. The base peak in the dexchlorpheniramine mass spectrum occurs at m/z 203. A peak with relative intensity 33.1 occurs at m/z 205. Interpret this information with...
1) What is the IUPAC name for the following compound? A) 6-Ethyl-6-heptene C) 2-Ethyl-1-heptene B) 2-Ethyl-1-octene...
1) What is the IUPAC name for the following compound? A) 6-Ethyl-6-heptene C) 2-Ethyl-1-heptene B) 2-Ethyl-1-octene D) 6-Ethyl-1-heptene 2) Label each C-C double bond in Kavain, a naturally occurring relaxant, as Eor Z. CH5 Kavain A) I = E and II = E CI= Z and II = E B) I = Z and II = Z D) I = E and II = Z 3) Which of the following statements about alkenes is not true? A) They are less...
25) Treatment of cyclopentene with peroxybenzoic acid A) results in oxidative cleavage of the ring to...
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 OsO4 E) none of the above 26) Provide a detailed, step-by-step mechanism for the reaction shown below. но Br2 + HBr Br 27) Provide a detailed, step-by-step mechanism for the reaction shown below. 28) Provide the reagents...
Write down your qualitative observations in the table below. Include relevant details such as color changes, precipitation, etc. (10 marks) Naphthalene n-heptane 1-octene Unknown Solubility in H20 (room temp.) Not soluble Solubility in H20 (high temp.) Soluble Solubility in cyclohexane (room temp.) Not soluble Br2 test Orange colour persists Br2 test (hv) Orange colour persists KMnO4 test Purple colour persists AlCl3/CHCl3 test Blue coloured solid 1. What class of compounds (alkene, alkane or aromatic) does your unknown belong to? (10...
We learned that to create vicinal diols from alkenes, the cis-1,2-diol or trans-1,2 diol required very different reagents. This isn't always the case and one notable reaction that defies this convention is the Prévost reaction! (4 points) To make the cis-diol, we typically use osmium tetroxide (catalytic amounts!). What other reagent combination would work for this particular transformation? a. OH OH (rac b. (4 points) To make the trans-diol, what reagent combination would be employed? ?? 1F2 OH (4 points)...
2) Diol 1 was prepared in one step (one pot - includes work-up) from what alkene? What reagents would you use to carry out this reaction? ОН OAc ??? AcO ОН 1
In an addition reaction to an alkene, the pi bond plays the role of nucleophile electrophile leaving group Select the product that results from the anti-Markovnikov/syn addition of H and OH to the following alkene. I II III IV What is the IUPAC name for the molecule shown below? 3-(l-butynyl)pentane 5-ethyl-3-octyne 3-ethyl-4-heptyne 5-ethyl-3-heptyne What would be the major product obtained from the addition of HBr to 2-methylpentene? 1-bromo-2-methylpentane 2-bromo-2-methylpentane 3-bromo-2-methylpentane 1-bromo-2-methylpentene What is the reaction product when 4-methyl-2-pentyne is reacted...
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,...
1) What is the IUPAC name for the following compound? A) 6-Ethyl-6-heptene C) 2-Ethyl-1-heptene B) 2-Ethyl-1-octene D) 6-Ethyl-1-heptene 2) Label each C-C double bond in Kavain, a naturally occurring relaxant, as Eor Z. CH5 Kavain A) I = E and II = E CI= Z and II = E B) I = Z and II = Z D) I = E and II = Z 3) Which of the following statements about alkenes is not true? A) They are less...
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 OsO4 E) none of the above 26) Provide a detailed, step-by-step mechanism for the reaction shown below. но Br2 + HBr Br 27) Provide a detailed, step-by-step mechanism for the reaction shown below. 28) Provide the reagents...
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