Using cyclohexanone as the starting material, describe how the following compounds can be synthesized:

CH3 CH3 H cyclopentamine The synthesis of cyclopentamine, an amphetamine-like central nervous system stimulant, from materials of five carbons or fewer involves several steps, one of which is shown below. Draw the structure(s) of the major organic product(s) of the following reaction: Mg, dry ether Br product

Provide reagents and conditions to produce the products indicated. EN OH H3C CH3 HO HO

The following compound forms a six-membered cyclic hemiacetal. Select the -OH group (A, B, C, D) that takes part in this reaction. сно H- OH H- (он) А в но -H C HO H- CHOH D Select one: O A ов O C

Nonconjugated , -unsaturated ketones, such as 3-cyclohexenone, are in an acid-catalyzed equilibrium with their conjugated , -unsaturated isomers. Propose a mechanism for this isomerization.

Ethylene oxide is the starting material for the synthesis of 1,4-dioxane. Propose a mechanism for each step in this synthesis.

2) How would you synthesize the following compounds from cyclohexanone? CH₂Br CH₂C6H5 A Br B C D CH,CH2CO2H

A compound has the molecular formula C6H12O2. Its IR spectrum shows a strong absorption band near 1740 cm-1. Its 1H NMR spectrum consists of two singlets at δ 1.2 and δ 3.6. Which is the most likely structure of the compound?

A synthetic organic molecule, G, which contains both aldehyde and ether functional groups, is subjected to a series of reactions in a multi-step synthesis pathway. In the first step, G undergoes a Wittig reaction, leading to the formation of an alkene, H. Subsequently, H is treated with an ozone (O3) reagent followed by a reducing agent in an ozonolysis reaction, resulting in the formation of two different products, I and J. Considering the functional groups present in G and the nature of the reactions involved, what are the most probable structures or functional groups present in products I and J? A. I contains a carboxylic acid group, and J contains an aldehyde group. B. I contains a ketone group, and J contains an alcohol group. C. I and J both contain aldehyde groups. D. I contains an ester group, and J contains a ketone group. Don't use chat gpt.

Acid-catalyzed dehydration of 3-methyl-2-butanol gives three alkenes: 2-methyl-2- butene, 3-methyl-1-butene, and 2-methyl-1-butene. Propose a mechanism to account for the formation of each product