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- Reactions of aldehydes and ketones; propose an efficient sythesis for the following. please answer fast i give you upvote.Naturally occurring compounds called terpenoids, which we'll discuss in Section 27-5, are biosynthesized by a pathway that involves loss of CO2 from 3-phosphomevalonate 5-diphosphate to yield isopentenyl diphosphate. Use curved arrows to show the mechanism of this reaction.Draw the expected product of the reaction of the following sugars with excess methyliodide and silver oxide.(a) a-d-fructofuranose
- Which of the following Phase 2 reactions is likely to target a N-bearing functional group specifically? a Acetylation b Glycine conjugation c Glucuronic acid conjugation d SulfationPropose a mechanism for the base-catalyzed aldol condensation of acetone (Figure 22-2).SPropose a reaction mechanism for isocyanide formation.
- Draw the expected product of the reaction of the following sugars with excess methyliodide and silver oxide.(a) a-d-fructofuranose (b) b-d-galactopyranosePropose a mechanism for base-promoted conversion of the proposed intermediate to sodium cyclopentanecarboxylateGive the product of the following reactions: (a) α-d-allopyranose + excess acetic anhydride and NaOAc
- One of the later steps in glucose biosynthesis is the isomerization of fructose 6-phosphate to glucose 6-phosphate. Propose a mechanism, using acid or base catalysis as needed.Illustrate the mechanism for claisen condensation ?In the synthesis of fluorescein reaction after the reaction mixture is heated and kept at a temperature of 160 – 180˚C you then treat the product with a solution of a strong base (1.0 M sodium hydroxide) followed by a strong acid (1.0 M hydrochloric acid). What is the purpose of these steps?