4-6 please 4) Pick which one of the conjugated dienes would be preferred for 1,2-/1,4-additions as well asDiels-Alder cycloadditions.(a)(b)empresent(c)(d)5) Which one of the aromatic compounds is the least reactive one for the formation of ortho- andpara-products as major?(a)-NMe₂ (b)0-COMe(c)0-OMe(d)NHCOME6) Which one of the following ring systems is neither aromatic nor anti-aromatic?(a) +NH(b)ΝΗ(c)(d))+7) The o-complex formed for the bromination of benzoic acid should beBr H(0)COOHCOOH BrCOOH(a)(b)(c)+H(d)HBrBrdbicyclotriene isomers shows the strongest UV absorption band (i.e.due the most stable form?COOH

Answered: Image /qna-images/answer/9e3abbc6-fdb1-4f19-a700-f54a006eb77e.jpg

4) Pick which one of the conjugated dienes would be preferred for 1,2-/1,4-additio Diels-Alder cycloadditions. (a) (b) (c) (d) 5) Which one of the aromatic compounds is the least reactive one for the formation para-products as major? (a) -NMе₂ (b) -COMe (c) OMe (d) 6) Which one of the following ring systems is neither aromatic nor anti-aromatic? (a) +( NH -S (b) C NH (c) (d) The g-complex formed for the bromination of benzoic acid should be

4) Pick which one of the conjugated dienes would be preferred for 1,2-/1,4-additio Diels-Alder cycloadditions. (a) (b) (c) (d) 5) Which one of the aromatic compounds is the least reactive one for the formation para-products as major? (a) -NMе₂ (b) -COMe (c) OMe (d) 6) Which one of the following ring systems is neither aromatic nor anti-aromatic? (a) +( NH -S (b) C NH (c) (d) The g-complex formed for the bromination of benzoic acid should be

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter14: Conjugated Compounds And Ultraviolet Spectroscopy

Section14.SE: Something Extra

Problem 38AP

See similar textbooks

Similar questions

The bicyclic alkene P can be prepared by thermal electrocyclic ringclosure from cyclodecadiene Q or by photochemical electrocyclic ringclosure from cyclodecadiene R. Draw the structures of Q and R, andindicate the stereochemistry of the process by which each reactionoccurs.
A conjugated diene with an even number of double bonds undergoes conrotatory ring closure underthermal conditions.
Propose a mechanism for the following cycloaddition reaction. Classify the reaction using the [m + n] classifications for cycloadditions. Draw the bonding molecular orbitals and identify the type of bonding present (supra - supra, antaraantara, or supra - antara). Identify if this reaction would proceed thermally or photochemically.
Answer the following question pertaining to the reaction of maleic anhydride and 1,3-butadiene: - Which conformation of 1,3-butadiene, s-cis or s-trans, is thermodynamically preferred and why?
Define about Sigmatropic Rearrangements ?
Give the structure(s) of the product(s) of each reaction. Indicate any relative stereochemistry, assuming that each of the Diels-Alder reactions will proceed with endo selectivity. If more than one product is formed, please indicate which one will be the major product or if they will be formed in equal amounts. If no reaction is expected to occur under the indicated conditions, then write "no reaction" or NR, and explain why you would expect nothing to occur. In all cases, equimolar amounts of both components/reagents are present unless indicated otherwise.
Describe Suprafacial and Antarafacial Rearrangement:
Using the Woodward–Hoffmann rules, predict the stereochemistry of belowreaction. photochemical electrocyclic ring closure of deca-1,3,5,7,9-pentaene
Stereoisomers of α-bromocinnamic acid: draw the reaction mechiansim with arows for the dehydrobromination of 2,3-dibromo-3-phenylpropanoic acid with ethanol and KOH to produce (Z)-α-bromocinnamic acid and (E)-α-bromocinnamic acid. Also draw the transition state for The (Z)-isomer syn-periplanar transition state and anti-periplanar transition state of the (E)-isomer.
Fill in the blanks in the following reactions. Include stereochemistry when relevant.
1- Chloro-1,2-diphenyletane can undergo E2 elimination to give either cis- or trans-1,2-diphenylethylene (stilbene). Draw New man projections of the reactive conformations leading to both possible products, and suggest a reason why trans alkene is the major product?
Give major products for 1,2-/1,4-additions (A) Diels-Alder (B-D) cycloadditions [2+2] cycloadditions , and Retro-Diels-Alder (E) cycloaddition. Illustrate the regiochemistry and stereochemistry (me so, enatiomer., exo or Endo) for cycloadditions B-D?