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- Select the correct reagent for the following transformation O H2/Pt O XS LAH O PCC O NaBH4 O Na2Cr207, H2SO4, H2O OHRank the compounds in order of reactivity toward nitration with HNO3: benzene 2-methylfuran thiophene Most reactive Least reactive Answer Bank 3-methylthiopheneIn addition to α cleavage, some aldehydes and ketones undergo theMcLafferty rearrangement. In the McLafferty rearrangement, a hydrogenon a carbon three atoms from the C=O is transferred to the carbonyl oxygen and a carbon–carbon bond is broken. This process forms an alkene and the radical cation derived from an enol, which appears as a fragment in the mass spectrum. Draw the products formed from the McLafferty rearrangement of 1-phenylpentan-1-one, and identify the fragment that results in the givenmass spectrum. If a mass spectrum of the ester ethyl pentanoate(CH3CH2CH2CH2CO2CH2CH3) is recorded, what is the mass of theradical cation formed by the McLafferty rearrangement?
- Draw mechanism using pyradine as a base in the intial step Draw the mechanism using pydradine as a general base Draw the mechanism using pyradine as a nucleophilic catalyst Draw the mechanism using nucleophilic catalysis and using acetate as a general base H3C ROH ་ ་ CH3 N H3C -RDraw the final organic product of the given reaction. OH CH3CH2NH2 heat H₂O + Select Draw Templates More C N HIn CHM 235, you will learn that the Michael reaction of ethyl acetoacetate with ethyl acrylate attords diethyl 2-acetylpentanedioate. Complete the mechanism by drawing curved arrows to indicate the flow of electrons. NaOEt H2C=CHCOEt CH3-CCH-CH2CH2COET + CH3 ELOH H. "OEt CH3 H2C=CHCOEt CH CH3-CCH-CH2CHCOET ČO,Et ČO,Et EtO-H
- Draw the structure for the nucleophilic substitution product.Please draw the reaction (attached)and explain the mechanism of an SN2 reaction then identify the nucleophile, substrate and the leaving group.The reaction below is a base-catalyzed aldol reaction. O || CH₂-C-H CH3-C-H Ethanal (Acetaldehyde) H I CH3-C-H Ethanal (Acetaldehyde) NaOH Draw curved arrows to show the movement of electrons in the step of the mechanism shown below. Arrow-pushing Instructions AC⇒x= :O: || :CH₂-C-H OH Bl CH3-CH—CH2-CH -CH₂-1-1 a 3-Hydroxybutanal (B-hydroxyaldehyde; formed as a racemic mixture) :0: :0: || CH3—CH—CH2-C-H A tetrahedral carbonyl addition intermediate X
- PQ-6. What is the rate determining step of this reaction? CH₂CH3 (A) HOTS H3C (C) NC CH₂CH3 HOTS H3C CH₂CH3 NaCN Hi H3C (S)-isomer (B) OTS acetone Hi H₂C (D) NC CH₂CH3 CO-H Ts CH₂CH3 ∙H H H₂C CO CN H H3C CH₂CH₂ (R)-isomerDraw the mechanism for the following reaction. OH OH H2SO4 A 100 186Draw the major product of the following reaction sequence. OH H2CrO4 HO NaBH4 H*/H20 ELOH он H3C* но