What is the expected integration of the vinylic hydrogens (hydrogens attached to carbons of a C=C bond) in each product? 2-methyl-1-butene: 2-methyl-2-butene:

Reaction of HBr with 3-methylcyclohexene yields a mixture of four products: cis-and trans-1-bromo-3-methylcyclohexane and cis-and trans-1-bromo-2-methylcyclohexane. The analogous reaction of HBr with 3-bromocyclohexene yields trans-1, 2-dibromocyclohexane as the soleproduct. Draw structures of the possible intermediates, and then explain why only a single product is formed in this reaction.

As an example of a ver rare occurence, the following hydrocarbon reacts with two equivalents of butylithium to form a dianion of the formula [C8H6]2-  . Propose a structure for this dianion and explain why this dianion forms so readily.

Alcohols are important for organic synthesis, especially in situations involving alkenes. The alcohol might be the desired product, or the OH group might be transformed into another functional group via halogenation, oxidation, or perhaps conversion to a sulfonic ester derivative. Formation of an alcohol from an alkene is particularly powerful because conditions can be chosen to produce either the Markovnikov or non-Markovnikov product from an unsymmetrical alkene. Using your reaction roadmap as a guide, show how to convert 4-methyl-1-pentene into 5-methylhexanenitrile. You must use 4-methyl-1-pentene and sodium cyanide as the source of all carbon atoms in the target molecule. Show all reagents needed and all molecules synthesized along the way.

Which will yield 2-methylpentane upon catalytic hydrogenation?

Below is a mechanism that represents the following single reaction sequence: a certain alcohol undergoes acid- catalyzed dehydration (conversion that involves the loss of water from the reacting molecule or ion) to form an alkene product. Write the IUPAC name of the product. Include E/Z stereochemistry.       Hint: Name of the substituent of the product is similar to that of reactant.

6- In a 1H-NMR spectra on a scale of 0 – 10 ppm, Show the exact locations in ppm of 1-the saturated hydrocarbons, 2- the unsaturated hydrocarbons, 3- the halogenatedhydrocarbons and 4- the aromatic hydrocarbons.

Name (including E/Z stereochemistry) the five alkenes that can produce 3-bromo-3-methylhexane on reaction with HBr.  Draw the skeletal structure of each molecule.

Chlordane, like DDT, is an alkyl halide that was used as an insecticide for crops such as corn and citrus and for lawns. In 1983, it was banned for all uses except against termites, and in 1988, it was banned for use against termites as well. Chlordane can be synthesized from two reactants in one step. One of the reactants is hexachlorocyclopentadiene. What is the other reactant?

Compounds X and Y are both C7H15Cl products formed in the radical chlorination of 2,4-dimethylpentane. Base-promoted E2 elimination of X and Y gives, in each case, a single C7H₁4 alkene. Both X and Y undergo an SN2 reaction with sodium iodide in acetone solution to give C7H15l products; in this reaction Y reacts faster than X. What is the structure of X? • Do not use stereobonds in your answer. • In cases where there is more than one possible structure for each molecule, just give one for each. . Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. Separate structures with + signs from the drop-down menu. на