Advantages And Disadvantages Of Cyclohexane

The benzene molecules replace 3 of the CO bonds and rest parallel to the plane of the remaining CO groups. The products geometry is such that it can be considered octahedral as opposed to tetrahedral. The carbonyl to molybdenum bonds are close to 90 degrees instead of 109.5 which is indicative of a tetrahedral complex. Using H NMR and infrared spectrum it is possible to analyze the product and determine its relative structure and composition. CO stretches have unique places within the spectrum and thus can be noted. H NMR can be used to determining the structure by comparing it to that of mestylene. Looking at these spectrum’s allows for one to look for indication of methyl group

group. The location of this hydroxyl functional group will impact the molecular structure of the

Grignard reagents also react with the least hindered carbon on an epoxide to break the ring in order to relieve ring strain.

2. Using the atom and bond library below, construct the following molecule. It may be

We used TLC analysis to identify each product obtained from the dihydroxylation reactions by spotting a TLC plate with the product of our reaction, a solution of cis-cyclohexane, trans-cyclohexane, and a 50:50 mixture of the two. We then placed the plate in a beaker with ethyl acetate saturating the atmosphere to allow the TLC plate to develop. Finally, we compared Rf values of the components of the mobile phase, after the phase was completed. 100% ethyl acetate was used instead of 100% Hexane or a mixture of Ethyl Acetate, because ethyl acetate has high polarity and can separate the components of a mixture to elution, unlike hexane, which is non-polar, and therefore unable to separate the components of the mixture. A 50:50 mixture of both would not work, because the polar and non-polar compounds would neutralize the mixture, and thereby not separate the components of the mixture.

The purpose of this experiment was to practice the functional group transformation procedure. The process of the experiment included the dehydration of 2-methylcyclohexanol in the presence of phosphoric acid and heat. The products that were formed from the reaction were 1-methylcyclohexene and 3-methylcyclohexene. The mass of the final product solution was 0.502g with a percent yield of 18.7% and a boiling point range of 84.5-98.5oC.

3. In Molecular Series I (Straight-Chain Alcohols): As you go through the group from methanol  ethanol  1-propanol  1-butanol:

Because there are steric hindrance of two methyl groups on 4th carbon, the hydride is added to the endo side of the carbonyl group. 3. Reduction of Camphor produces a mixture of diastereomers. 4.

- The C-H bonds in this structure are shown at 1444 and 1368cm-1. These two bands indicate the two different types of C-H bends that occur on the molecule. One is that of the alkene and the other is that of the several alkanes on the molecule.

Which means that it did not have any neighboring hydrogens but it still had a hydrogen on the compound. The next peak was a multiplet around 6-7.1 ppm and had 5 similar hydrogens. According to the H NMR chemical shifts, 5 similar hydrogens and a ppm range from 6-8.0 ppm, this particular peak was an aromatic. More specifically a benzene with 5 similar hydrogens, and with another hydrogen with attached substituents. This aromatic also contains 4 degrees of saturation, satisfying the requirement that the compound needed to have DoU of 4. The next peak was a quartet around 3.4-3.5 with 2 hydrogens. The quartet meant that the compound had 3 neighboring hydrogens and that particular peak was a CH2. The last pear was a triplet around 1.2-1.4 ppm with 3 hydrogens on the compound. The triplet meant that compound that 2 neighboring hydrogens indicating that particular peak was a methyl group (CH3). This help determine that the CH2 and CH3 were bonded to one another creating an ethyl

Figure 2: Gas Chromatography analysis from the first sample. From top to bottom the peaks are ordered as followed: 3-methylcyclohexanol (A), 1-methylcyclohexanol (B), and 2-methylcyclohexanol

Ans. Chair conformer of cyclohexane has negligible dipole moment due to symmetry and equal charge distribution. On the other hand Boat conformation of cyclohexane has dipole moment due to the shape of the conformer making it polar due to charge distribution and steric effects.

Enantiomers are two same chemical moieties which have a different spatial arrangement. They are described as mirror images of each other, that is they are non-superimposable. They have similar physical properties but differs in some chemical properties. The two different arrangements are classifieds as L- and D-, depending upon the functional group of reference.

Acetyl plays role can start the transcription. Methyl groups binds to a specific amino acid in a specific histone type. When the CH3 are added methylation spreads from the tail of one histone to the adjacent histone. The addition of phosphate is example of epigenetic changes. The addition of these three groups should be balanced.

These helixes are stabilized by intramolecular hydrogen bonding. The polar residues on the helixes are also able to form intermolecular hydrogen bonding with other zein molecules in the same plane. α-zein is similar to the commercially available zein.