These are the homework exercises to accompany the Textmap for McMurry's Organic Chemistry textbook.
Name the following compounds:
How many isomers are possible for C5H8? Draw them.
Draw the following compounds:
D) trans 3-hepten-1-yne
Do alkynes show cis-trans isomerism? Explain.
A – 3,6-diethyl-4-octyne
B – 3-methylbutyne
C – 4-ethyl-2-heptyne
D – cyclodecyne
2 possible isomers
No. A triply bonded carbon atom can form only one other bond and has linear electron geometry so there are no "sides". Allkenes have two groups attached to each inyl carbon with a trigonal planar electron geometry that creates the possibility of cis-trans isomerism.
What alkyne would you start with to gain the following products, in an oxidation reaction? Keep in mind resonance.
Propose a reaction scheme for the following compound starting from the alkyne and showing required reagents and intermediates.
Usng any alkyne how would you prepare the following compounds:
pentane, trans-4-methyl-2-pentene, cis-4-methyl-2-pentene.
If OH- has a pKa of 14.00 in water, what pKa be required to deprotonate OH-?
Need a stronger base, or a compound with a pKa > 14.00 to deprotonate.
Give the possible reactants for the following formations:
Propose a synthetic route to produce 2-pentene from propyne and an alkyl halide.
Starting at 3-hexyne predict synthetic routes to achieve:
A – cis-3-hexene
B – 3,4-dibromohexane
C – 3-hexanol
Starting with acetylene and any alkyl halides propose a synthesis to make (a) pentanal and (b) hexane.