Provide the mechanism for the saponification of the following compound with HCl used in the work up: com

Isoerythrogenic acid, C18H26O2, is a acetylic fatty acid that turns vivid vle on exposure to UV light. On Catalytic hydrogenation over a palladium catalyst, five molar equivalents of hydrogen are absorbed, and stearic acid

This is the structure of xylan given, is the mechanism still the same (would there be two hydrolysis steps)?

Following are the steps in the industrial synthesis of glycerin. Provide structures for all intermediate compounds (AD) and describe the type of mechanism by which each is formed.

Dihydroxyacetone reacts with phosphoric acid to form the monoester called dihydroxyacetone phosphate. Complete the reaction for its formation.

What is the final organic product for the following malonic ester synthesis? CH2-COOEE (1) NaOEt, ETOH (2) Br Br (3) NaOEt, EtOH (4) H3O* COOET heat (a) -COOH (b) COOH (c) HODC (d) Br CooH Answer (a) O Answer (b) Answer (c) O Answer (d) O O 0 0

Acetic acid was also formed in the synthesis of aspirin and would be present with aspirin in the reaction mbrture. Why is it unlikely that your isolated aspirin is contaminated with acetic acid? a Whet le voun euld

shawl the detailed beland the neaction Label each спе of the reaction the ardor listed belanu. of part of the defalled mechanism wing of the terms listed.. - ester hydrolysis decarboxylaton Keto- endi tautomensin reaction. mechanism proceeds in •OCN3 OH 1130 + он '+' CH 3 CH + CO₂

CH3 Ph3P-CHCH3 H3C H3C Aldehydes and ketones are converted into alkenes by means of a direct nucleophilic addition called the Wittig reaction. In the reaction, a triphenylphosphorine ylide, also called a phosphorane, adds to an aldehyde/ketone to give a four-membered cyclic intermediate called an oxaphosphetane. The oxaphosphetane is not isolated but instead spontaneously decomposes to release triphenylphosphine oxide and an alkene. Ph3P-CHCH3 H3C The ylide is formed by reaction of triphenylphosphine, a good nucleophile, with a primary alkyl halide in an S 2 reaction, followed by deprotonation of the carbon with a strong base, such as butyllithium. The carbonyl carbon and the carbon originally bonded to the halogen become the two carbons with the double bond in the product alkene :0: CH3 Com The real value of the Wittig reaction lies in its ability to yield an alkene of predictable structure, as the C-C bond is precisely where the C=O bond was in the reactant and no isomers (other than…

Which of the following correctly describes the movement of electrons in the reaction of nucleophile (Nu:) with a carbonyl group? A) Nu: B) Nu: C) Nu: D) Nu: ܤ ܗ + + R R R R R V R R R O: Nu- Nu- Nu Nu :Ö:* ¹R R :Ö: "R R :Ö: "R R :O: "R R