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- Express the reaction of α,β-Unsaturated Carbonyl Compounds with Organometallic Reagents ?The reaction proceeds by an SN2 mechanism. Draw a sketch of the structure of the transitionstate, clearly indicating:- the geometry at the electrophilic carbon centre, and- bonds in the process of being broken or formed with dotted lines, if present.Give the structure of the following compound(a) iodoform
- We are currently working with diastereomeric products of acid-base reactions in my organic chemistry class and while I understand the basics of the creation of selectively soluble salt products, drawing the reactions has always been difficult. Our prelab asks us to "draw the expected diasteromeric products from the reaction of racemic phenylsuccinic acid with excess (s)-methylbenzylamine and label the chiral centers" I would really appreciate some help with this!If you oxidatively degraded lignin and were able to separate the following aldehyde inreasonable yield and purity, which other compound(s) could you derive from it, usingredox chemistry?Arrange the structure on the image with regard to the reactivity towards nucleophilic acyl substitution 1 being the least and 3 being the most
- Arrange the structure on the image with regard to the reactivity towards hydrolysis. 1 being the least and 3 being the most(a) State and illustrate the following :(i) Wolff-Kishner reduction (ii) Aldol condensation(b) An organic compound (A) which has characteristic odour, on treatment with NaOH forms two compounds (B) and (C). Compound (B) has the molecular formula C7H8O which on oxidation with CrO3 gives back compound (A). Compound (C) is the sodium salt of the acid. Compound (C) when heated with soda lime yields an aromatic hydrocarbon (D). Deduce the structures of (A), (B), (C) and (D). Write chemical equations for all reactions taking place.The (+) - aureol is a natural product that has shown selective activity against certain colon and lung cancer cell lines. It is postulated that a key step in the biosynthesis of this substance is the conversion of carbocation A into B. Propose a possible mechanism for this transformation (MUST show the corresponding arrows).
- Explain the E2 mechanism (bimolecular elimination) of of Elimination ?Doxaprost, an orally active bronchodilator patterned after the natural prostaglandins , is synthesized in the following series of reactions starting with ethyl 2-oxocyclopentanecarboxylate. Except for the Nef reaction in Step 8, we have seen examples of all other types of reactions involved in this synthesis. Q. Describe experimental conditions to bring about Step 7 and account for the fact that the trans isomer is formed in this step.(a) Illustrate the following name reactions by giving example :(i) Cannizzaro’s reaction(ii) Clemmensen reduction(b) An organic compound A contains 69.77% carbon, 11.63% hydrogen and rest oxygen. The molecular mass of the compound is 86. It does not reduce Tollen’s reagent but forms an addition compound with sodium hydrogen sulphite and gives positive iodoform test. On vigorous oxidation it gives ethanoic and propanoic acids. Derive the possible structure of compound A.