ALKENE PROBLEMS

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ALKENE PROBLEMS
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Name the following cycloalkenes:
cyclic alkenes nomenclature

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ALKENE PROBLEMS
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menthyl chloride and that of neomenthyl They have the structures shown below.

 
problema-resuelto
 
One of these stereoisomers undergoes elimination by treatment with sodium ethoxide in ethanol much more readily than the other. Which will react faster? Because? Indicate the resulting product.

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ALKENE PROBLEMS
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Draw the formulas of the following compounds:

1) 2-Methylhexa-1,5-diene
2) 2,3,4-Trimethylocta-1,4,6-triene
3) 4-tert-Butyl-2-chlorohept-1-ene
4) 3-Ethyl-2,4-dimethylhept-3-ene
5) 3,4-Diisopropyl-2,5-dimethylhex-3-ene
6) Hept-1-ene
7) cis-Oct-3-ene
8) 3-ethylpent-2-ene		 9) trans-1,4-Dibromobut-2-ene
10) 3-Chlorohex-2-ene
11) Buta-1,3-diene
12) Hexa-1,4-diene
13) 5-Methyl-3-propylocta-1,4,6-triene
14) 6-Methyl-6-propylnone-2,4,7-triene
15) 2,3,5-Trimethylocta-1,4-diene
16) 3-Propylhepta-1,5-diene.

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ALKENE PROBLEMS
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In the elimination reaction of 5-bromononane with potassium ethoxide in ethanol, draw Newmann projections showing the conformation leading to cis-4-nonene and trans-4-nonene, respectively. Indicate the hydrogen that is lost in each case and suggest a mechanism that explains the observed stereoselectivity.

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ALKENE PROBLEMS
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Name the following alkenes:
alkenes nomenclature

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ALKENE PROBLEMS
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Write the mechanism that explains the following transformation:

 
problemas-alquenos

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ALKENE PROBLEMS
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Rank the following alkenes in order of decreasing stability: a) 1-pentene; b) (E)-2-pentene; c) (Z)-2-pentene; d) 2-methyl-2-butene.

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ALKENE PROBLEMS
Hits: 9070

Despite attempts, the alkene 2,2,5,5-tetramethyl-3,4-(dimethylethyl)-3-hexene has never been synthesized. Because?.

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ALKENE PROBLEMS
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Write the structure of the three alkenes that are obtained in the acid-catalyzed dehydration of 2-pentanol.

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ALKENE PROBLEMS
Hits: 10106

Draw the compound of molecular formula C7H13 Br that each alkene shown as unique elimination product E2 forms.

problemas-alquenos