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- HN 11) Propose an efficient synthesis for the following transformation:Which reagent(s) would accomplish the synthesis showWn below? NH2 NH2 но. H3CO. A) NaBH4 В) РСС C) LAH D) Na2Cr207 / H2SO4 E) NAOH www wOH h) Draw a stepwise mechanism for the following reaction. NH2OH MEOH %3D i) Suggest two methods to synthesize the alkene below from cyclopentanone.
- Provide a detailed arrow-pushing mechanism for the following transformation: Me PHOH PhO. Et Мe Me Et Me OTs Provide a detailed arrow-pushing mechanism for the following transformation:The last step in the synthesis of β-vetivone, a major constituent of vetiver, a perennial grass found in tropical and subtropical regions of the world, involves treatment of C with CH3Li to form an intermediate X, which forms β-vetivone with aqueous acid. Identify the structure of X and draw a mechanism for converting X to β-vetivone.O Draw the major organic product that contains the carbon labeled with a * (do not include я ня - Base:
- 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 "OCH3Propose a mechanism for the following transformation JungAn a,ß-unsaturated carbonyl compound can be prepared by a reaction known as a selenenylation-oxidation reaction. A selenoxide is formed as an intermediate. Propose a mechanism for the reaction. 1. LDA/THF 2. CgH5SeBr 3. H,02 ŠECH5 a selenoxide
- M8. draw the products formed in the following transformations A-CTreatment of a cyclic ketone with diazomethane is a method for accomplishing a ring-expansion reaction. For example, treatment of cyclohexanone with diazomethane yields cycloheptanone. Propose a mechanism.Isolated from marine algae, prelaureatin is thought to be biosynthesized from laurediol by the following route. Propose a mechanism.
