Multiple Select QuestionSelect all that applySelect the statements that correctly describe the preparation of organoboranes used in the Suzuki reaction.Multiple select question.Reaction of RLi with BH3 followed by NaOH produces an arylborane.Reaction of RLi with trimethylborate is used to prepare an arylborane.Hydroboration of an alkyne using catecholborane produces a vinylborane.Hydroboration of an alkene with BH3 followed by reaction with H2O2 and OH- gives a vinylborane.
Question
Multiple Select QuestionSelect all that applySelect the statements that correctly describe the preparation of organoboranes used in the Suzuki reaction.Multiple select question.Reaction of RLi with BH3 followed by NaOH produces an arylborane.Reaction of RLi with trimethylborate is used to prepare an arylborane.Hydroboration of an alkyne using catecholborane produces a vinylborane.Hydroboration of an alkene with BH3 followed by reaction with H2O2 and OH- gives a vinylborane.
Solution
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Reaction of RLi with BH3 followed by NaOH produces an arylborane: This statement is incorrect. The reaction of RLi (an organolithium compound) with BH3 (borane) would produce an alkylborane, not an arylborane. Arylboranes are typically prepared from aryl halides, not from organolithium compounds.
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Reaction of RLi with trimethylborate is used to prepare an arylborane: This statement is also incorrect. Similar to the first statement, the reaction of RLi with trimethylborate would produce an alkylborane, not an arylborane.
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Hydroboration of an alkyne using catecholborane produces a vinylborane: This statement is correct. Hydroboration of an alkyne using catecholborane does indeed produce a vinylborane. This is a common method for the preparation of vinylboranes, which can then be used in the Suzuki reaction.
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Hydroboration of an alkene with BH3 followed by reaction with H2O2 and OH- gives a vinylborane: This statement is incorrect. Hydroboration of an alkene with BH3 followed by reaction with H2O2 and OH- would produce an alcohol, not a vinylborane. The boron atom is replaced by a hydroxyl group in this reaction, not a vinyl group.
Similar Questions
Matching QuestionOrganoboranes used in the Suzuki reaction can be prepared in various ways. Match each type of organoborane to the synthetic method commonly used to prepare it.InstructionsDrag and drop application.VinylboranesVinylboranes drop zone empty.ArylboranesArylboranes drop zone empty.hydroboration of an alkyne with catecholboranereaction of an aryllithium compound with B(OCH3)3
Multiple Choice QuestionWhich of the following catalyst/reagent combinations is frequently used in the Suzuki reaction?Multiple choice question.Cl2(Cy3P)2Ru=CHPh/alkenePd(PPh3)4 with NaOH or NaOCH2CH3R2CuLi with a vinyl halideH2 with Ni, Pd or Pt
Text AlternativeMultiple Choice QuestionSelect the structure of the final product obtained from the Suzuki reaction shown.Multiple choice question.ABC
Multiple Select QuestionSelect all that applyWhich of the following organic halides are the most commonly used substrates for the Suzuki reaction?Multiple select question.Vinyl halides (Br or I)Vinyl halides (Cl)Methyl halides (Br or I)Alkyl halides (Cl or Br)Aryl halides (Br or I)
Fill in the Blank QuestionFill in the blank question.The most common organic halides used as starting materials in the Suzuki reaction are and halides.
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