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Design a strategy to synthesize 1-phenylbuta-1,3-diene from a Wittig reaction
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- Devise a synthesis of (1Z,3E)-1-phenylocta-1,3-diene from hex-1-yne and (Z)-2-bromostyrene using a Suzuki coupling.Show how to convert ethylene to Bromoethane compound.Provide a synthesis starting from benzene, toluene, bromocyclohexane and any other carbon compound having 4 carbons or less. Reagents not bonded in the final compound do not count for the 4-carbon rule, but you can use compounds like TsCl or PPh3.
- 1-bromo-2-methylpropane can be synthesized from tert-butanol in two steps. Provide a synthesis route that uses a radical-based process.Authentic skunk spray has become valuable for use in scent-masking products. Show how you would synthesize the two major components of skunk spray (3-methylbutane-1-thiol and but-2-ene-1-thiol) from any of the readily available butenes or from buta-1,3-diene.Show how to convert ethylene to 2-Chloroethanol compound.
- How to synthesize 1-phenyl-1-bromopropane from benzene?Diphenylacetylene can be synthesized by the double dehydrohalogenation of 1,2-dibromo-1,2-diphenylethene. The sequence starting from (E)-1,2-diphenylethene consists of bromination to give the dibromide, followed by dehydrohalogenation to give a vinylic bromide, then a second dehydrohalogenation to give diphenylacetylene.(a) What is the structure, including stereochemistry, of the vinylic bromide?(b) If the sequence starts with (Z)-1,2-dibromo-1,2-diphenylethene, what is (are) the structure(s) of the intermediate dibromide(s)? What is the structure of the vinylic bromide?10. Draw and provide an IUPAC name for the acyclic diene that forms trans 1,2- dimethylcyclohexa-3,5-cyclobutene in a photochemical electrocyclic reaction. Clearly show the frontier orbitals involved in the reaction.
- Propose a structure for an aromatic hydrocarbon, C10H14, that can form only one C10H13Cl product on substitution of a hydrogen on the aromatic ring with chlorine.Show how to prepare 1-nonene from 1-bromoheptane, via the use of a Gilmanreagent. Show how the Gilman is synthesized from bromoethylene.Why do cis-1-bromo-2-ethylcyclohexane and trans-1-bromo-2-ethylcyclohexane form different major products when they undergo an E2 reaction?