Which of the follwing is the major product of the reaction sequence shown? (1) NH,NH2, cat. H* (2) KOH, A NH он NH2 (A) (B) (C) (D) Compound C Compound D Compound B Compound A
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- A. Arrange the following radicals in order of decreasing rate of bromination. Justify your answer. B. Trehalose and isomaltose are both dimers of glucose. However, they have considerablydifferent reactivities. Concisely explain why these differences are observed. -Isomaltose is a reducing sugar while trehalose is not.-Trehalose is very resistant to acid hydrolysis while isomaltose can be acid-hydrolyzed withease.Identify the intermediates (A–C) in the following reaction sequence, which was used to prepare racemic ooxacin. One enantiomer of the product, levooxacin, is an antibiotic used to treat severe bacterial infections that have not responded to other drugs.Identify the intermediates (A–C) in the following reaction sequence, which was used to prepare racemic ofloxacin. One enantiomer of the product, levofloxacin, is an antibiotic used to treat severe bacterial infections that have not responded to other drugs.
- Bromide Bhas normal activity (for a secondary bromide) towards SN1 substitution, but A has much higher reactivity and Chas much lower reactivity.epi-Artistolochene, a hydrocarbon found in both pepper and tabacco, is biologically synthesized by the follwing pathway. Add curved arrows to show the mechanism of each step(−)-Hyoscyamine, an optically active drug used to treat gastrointestinal disorders, is isolated from Atropa belladonna, the deadly nightshade plant, by a basic aqueous extraction procedure. If too much base is used during isolation, optically inactive material is isolated. (a) Explain this result by drawing a stepwise mechanism. (b) Explain why littorine, an isomer isolated from the tailflower plant in Australia, can be obtained optically pure regardless of the amount of base used during isolation.
- Identify compounds A and B, two synthetic intermediates in the 1979 synthesis of the plant growth hormone gibberellic acid by Corey and Smith. Gibberellic acid induces cell division and elongation, thus making plants tall and leaves large.4. Give the structure of compounds A to E in the following reaction sequence.Draw the product of this reaction and states its IUPAC name, and states what type of mechanism is occuring (eg. SN1, SN2, E1, E2, etc)?
- Draw the curly arrow mechanism of the following reaction. [If possible, give 3 different ways to answer](-)-Hyoscyamine, an optically active drug used to treat gastrointestinal disorders, is isolated from atropabelladonna, the deadly nightshade plant, by a basic aqueous extraction procedure. If too much base is used during isolation, optically inactive material is isolated A) explain this result by drawing a stepwise mechanismIf compound 1 is instead reacted with strong aqueous acid a different product is formed, with the formula C12H1O. Identify the product and draw the full curly arrow mechanism for its formation