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- O Answer (d) QUESTION 6 Which one of the following compounds does not undergo an aldol reaction with itself when treated with NaOEt in EtOH? H. (a) (b) (c) CH3 (d) (cH); C H. O Answer (a) O Answer (b) O Answer (c) O Answer (d) QUESTION 7 What is the major organic product after the following two reaction steps ?Reaction benzaldehyde with (CH3CN) in presence of base called ? (a) Dopner reaction (b)Crossed Claisen condensation (C) Cope reaction (d) Aldol condensation 10:00 PMGive the IUPAC name of the two carbonyl compounds reacted together to synthesize compound A, given below, by a crossed aldol condensation followed by dehydration. || CH3CCH=CH₂2 A
- (a) 11. (b) What is the major product of the elimiation below? |||-- EtONa EtOH (C) (d)SP asuno Answer (d) QUESTION 5 The introduction of one of the following substituents to a benzene ring through diazonium salt substitution does not require a copper salt. What is the identity of that substituent? (a) I (b) Br (c) CI (d) CN O Answer (a) Answer (b) OAnswer (c) Answer (d) QUESTION 6 Which one of the following compounds does not undergo an aldol reaction with itself when treated with NaOEt in EtOH? O O O OWhich structure is an intermediate in the base catalyzed tautomerization of the below enol to its keto form? The correct answer is C but please explain why.
- ) Cinnamaldehyde is used in artificial cinnamon flavoring. Show how cinnamaldehydeis synthesized by a crossed aldol condensation followed by dehydration.H CHcinnamaldehyde C COH(b) Adding acetophenone slowly to a cold solution of LDA produces the enolate of acetophenone; but adding LDA slowly to a cold solution of acetophenone produces acondensation product. Show the reactions happening in each case, and explain why weobserve such different results• Using aldol or crossed aldol condensation, suggest a synthesis of the following compounds: a b مليمت H3C H3C CH3 H3C ge H SavedWhen 3,7-nonadione is treated with NaOH base, it produces the enolate shown. What is the final product of this intramolecular aldol condensation (after dehydration)? i The final product is: A) B) C) D) & & & & NaOH
- Draw the product formed when phenylacetic acid (C6H5CH2COOH) istreated with following reagent. With some reagents, no reaction occurs. [1] SOCl2; [2] CH3CH2CH2NH2 (excess)Orsellinic acid, a common constituent of lichens, is synthesized from the condensation of acetyl thioester and malonyl thioester. If a lichen is grown on a medium containing acetate that was radioactively labeled with 14C at the carbonyl carbon, which carbons will be labeled in orsellinic acid?18) What two organic starting materials are required to produce cinnamaldehyde (PhCH=CHCHO) via a crossed aldol condensation followed by dehydration? A) PhCH3 and CH3CHO B) PhCHO and CH3CHO C) PhCHO and CH3CH2CHO D) PhCHO and CH3CH₂OH b