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- Draw the major product(s) when the following molecule is reacted with excess NaOEt in EtOH, followed by aqueous acidic work-up. CH;CH,OĊCH(CH,)¿COCH,CH3 CHaIdentify the suitable reagents for the given reaction and arrange them accordingly. 1 OH OEt 2 OEt OEt O 1) EtOH, H₂SO4; 2) EtOH, H₂SO4 O 1) EtONa followed by H₂O; 2) TsCl/py followed by EtONa O 1) EtONa followed by H₂O; 2) NaH followed by EtBr O 1) EtOH, H₂SO4; 2) NaH followed by EtBr O 1) EtOH, H₂SO4; 2) TsCy followed by EtONaIdentify the best reagents to complete the following reaction. CI o
- Provide reagents for the following transformations. You may use anything you like b) d) ? OCH3 ? ол ? ? Ph OH что ОН HO COOHClaisen rearrangement of an allyl phenyl ether with substituent groups in both ortho positions leads to the formation of a para-substituted product. Propose a mechanism for the following rearrangement.The Favorskii reaction involves treatment of an -bromo ketone with base to yield a ring-contracted product. For example, reaction of 2-bromocyclohexanone with aqueous NaOH yields cyclopentanecarboxylic acid. Propose a mechanism.
- Aromatic substitution reactions occur by addition of an electrophile such as Br+ to an aromatic ring to yield an allylic carbocation intermediate, followed by loss of H+. Show the structure of the intermediate formed by reaction of benzene with Br+.Fill in the missing reagents a-h in the following scheme:Fill in the missing reagents a-e in the following scheme:
- An acetal produces the following three compounds upon hydrolysis. Of acetals A-E which could it be? H3CO OCH3 П A B U D Acetal A H2O H₂SO4(cat.) замен поста "OCH3 В + HO. H₂CO ОН D + OCH3 CH3OH E OCH3 "OCH3Please give the appropriate reagents to complete the following synthesis. H ? hy=3What is the major product obtained from the following reactien? Br 1) Mg, ether 2) СО, ether 3) H;0* Benzaldehyde O Aldehyde O Benzoic acid Acetophenone Page
