Which of the following alkyl halides could not be used to prepare an alkyltriphenylphosphonium bromide? Why. How is an ylide formed from a phosphonium salt? Br OH Br Br Br
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- Write the appropriate reagents, conditions and products for the following electrophilic aromatic substitutions: HNO3 ? H₂SO4 NProvide synthetic routes for the preparation of the starting materials of azo dye Alizarine Yellow R starting from benzene O₂N -NEN OH CO₂HWhich of the following species is attacked by benzene in the electrophilic nitration reaction? NO+ NO₂ NO₂ HNO3 N3™ +
- What explains why many aldehydes and ketones can undergo self-condensation reactions in basic conditions? The alpha carbon can lose a proton and act like a nucleophile and the carbonyl carbon is an electrophile. The alpha carbon can gain a proton and act like an electrophile and the carbonyl carbon is a nucleophile. The oxygen of the carbonyl group can attack the carbon of the carbonyl group. Only esters can undergo self-condensation reactions.What reagents are needed to carry out this reaction? CH;CH,CH2CCH PCC in methylene chloride Sia2BH and then basic hydrogen peroxide Aqueous acid and mercury sulfate MCPBA and then Swern Oxidation Question 10 What is the intermediate that forms during this reaction? CH;CH,CH,CCH O an enol an epoxide an alkoxide a carbanionCompound X, shown below, spontaneously reacts via an intramolecular SN2 to produce intermediate Y, known as an "aziridinium" ion. In the presence of water, intermediate Y reacts further to form product Z. What is the identity of product Z. OH (A) + En Br O (B) aziridinium ion Y OH (C) H₂O + En Z HO
- 2) a) n-Butyllithium is used to deprotonate the following compounds. Draw the structures of the resulting organolithium compounds (assume they are monomeric). Me₂N SO₂ b) Explain the selectivity of deprotonation. c) Each organolithium is reacted with ethyltosylate. Draw the structures of the resulting products.Arrange the compounds in order of INCREASING reactivity towards bromination. Toluene, Nitrobenzene, Anisole, Aniline Acetophenone, Bromobenzene, Aniline, Phenol Acetanilide, Benzaldehyde, Toluene, IodobenzenePredict the products obtained from the reaction of triolein with the following reagents. ozone, then dimethyl sulfide
- Which of the following compounds are suitable solvents for Grignard reactions? ) CH3¬O¬CH3Which of the following reagents have no peroxy bond in their structure? a) Peroxyphosphoric acid b) Manganese dioxide c) Lead dioxide d) Perchloric acidWhich of the following compounds precipitates during a positive test for SN1 reactivity of an alkyl halide? A positive test does not give a precipitate. alcohol complexed to Ag AgBr or AgCl Ag (H₂O) elemental mercury elemental silver alkyl nitrates