which of the following coupling reactions can be used to couple vinyl groups to a benzene...
2. Briefly explain why ethanol, and not hexane, was used as a solvent in this reaction? 3. Why it is necessary to filter the crude coupling product through a column of anhydrous MgSO4? 4. Briefly explain why aryl bromides and iodides, rather than aryl chlorides or fluorides, are typically used as substrates in Pd-catalyzed coupling reactions. 5. Propose a synthesis for the molecule A shown below, using benzene, phenyl boronic acid, tert-butyl bromide and any inorganic reagents needed. A retrosynthetic...
Which of the following can be used as a hydrogen source in transfer hydrogenation reactions? -benzene -cyclohexadiene -diazene -both b & c -all the above
Benzene will engage in electrophile aromatic substitution
reactions. Which of the following statemtns is NOT TRUE about the
mechanism for this reaction? please help I dont know what to
put!
3. Benzene will engage in electrophilic aromatic substitution reactions. Which of the following statements is not true about the mechanism for this reaction? A. Formation of a carbocation intermediate is the rate-determining step. B. The carbocation intermediate has an sp3-hybridized carbon in the ring. C. Benzene is an electrophile. D....
Which of the following is true regarding ᐃG? (mark all that apply) Group of answer choices When Keq is >> 1, ᐃG is large and negative When Keq is << 1, ᐃG is large and positive When Keq is << 1, ᐃG is small and positive When Keq is << 1, ᐃG is large and negative When Keq is >> 1, ᐃG is small and positive 2-Why is coupling of reactions an important biochemical mechanism to allow non-spontaneous reactions to...
Which of the following reactions would you use to prepare toluene from benzene? Select one: a. Friedel-Crafts Acylation reaction b. Halogenation c. Friedel-Crafts Alkylation reaction d. Nitration
What type of reaction could not be used to accomplish the following transformation? A. Gillman ((CH2=CH), Culi) B. Grignard (CH2=CHMgBr) C. Heck (CH2=CH2) D. Suzuki (CH2=CHB(OR)) E. All of the above could be used. OI. A II. B O III. IV.D OVE
Which of the following functional groups will be found in the molecule, LSD, shown below? (a) Amine (b) Alkene (c) Ether (g) Benzene D (h) Alcohol 0) Ester Select all possible options that apply. (d) Alkyne (e) Amide (f) Ketone (1) Carboxylic Acid (k) Aldehyde
Select the statements below that are TRUE. A: Benzene and its derivatives tend to undergo electrophilic aromatic addition reactions. B: Benzene and its derivatives tend to undergo electrophilic aromatic substitution reactions. C: Substitution reactions have energies of activation that are very low. D: Dienes and alkenes are much more stable than benzene rings. E: Addition reactions destroy the integrity of the benzene ring. F: Benzene and its derivatives undergo a type of substitution reaction in which a hydrogen atom is...
Which of the following are electron donating groups? -CH -NO, -COCH O-OCH - NHCOCH -CN Question 2 2 Which of the functional groups can act as a hydrogen bond donor? Select all that apply Carboxylic acid Alcohol D Amine Ester Aromatic ring Ether Amide Ketone
Which of the following substituted benzene rings is more
activated towards electrophilic aromatic substitution than benzene?
Select all that apply
Which of the following substituted benzene rings is more activated towards electrophilic aromatic substitution than benzene? Select all that apply. CF3 Br NH2 OH A 00 D E F ОЕ OF D ОА OB Ос