OrgChem BioChem Flashcards
(58 cards)
An ethylene has a total ____ sigma bonds
5
Which organic species has a carbon atom with a valence of three (trivalent)
Methyl carbanion
Pentene has three structutral isomers: n-pentane, neopentane, isopentane.
Arrange in increasing bioling point
Neo < iso < n-
In the hydrogentation of one mole of 1,3-pentadiene with 2 moles of H2 gas in the presence of nickel catalyst, what is the expected product upon completion of the reaction
n-pentane
What is the most stable conformation of cyclohexane?
Chair
In nucleophilic addition of reactions of alkenes with HZ in which the nucleophile Z attaches to more alkyl-substituted carbon and the H attaches to the carbon that already has the greater number of H atom, the rule being followed by the reaction is:
Markovnikov’s rule
The hydrobromination of 4-methyl-3-heptene produces:
4-bromo-4-methylheptane
Friedel-crafts acylation of benzene with acetyl chloride in AlCl3 yields:
Acetophenone
In the bromination of isophthalic acid, what is the expected major product?
5-bromo-1,3-benzenedioic acid
In the Wolff-Kishner reduction of cyclopentanone using hydrazine with KOH, what is the expected final product of the reaction?
Cyclopentane
In the Wittig reaction of benzophenone with methylenetriphenylphosphoranr, what is the expected final product?
1,1-diphenylethene
In the Clemmenses reduction of 4-n-hexanoylresorcinol using amalgamated zinc and concentrated HCl, what is the expected product of the reaction?
4-n-hexylresorcinol
In the laboratory preparation of acetic anhydride using acetic acid as the starting materils, acetic acid is heated at a very high temperature (700C) in the presence of AlPO4 to yield an extremely reactive intermediate. This intermediate is combined with acetic acid to finally synthesize acetic anhydride. This intermediate in commonly called:
Ketene
Which of the following is true about SN1 of alkyl halides (RX)?
A two-step reaction mechanism (slow step and fast step) is involved.
In the reductive amination of 3-pentanone using NH3 and sodium cyanohhdridoborate, the compound is:
3-aminopentane
Glucose is the only carbohydrate that the brain can use for energy. Which oathway is mobilized to supply the need of the brain during starvation
Gluconeogenesis
Which type of fatty acid should people avoid ingesting?
Saturated, because the risk of cardiovascular disease is increased
The most abundant lipid present in an organism
Fats
Fats are esters derived from fatty acids stored via esterification with glycerol. Due to this reaction, fats are also referred to as:
Triacylglycerols
Glycerides
Triacylglycerides
Used by soap manufacturers on a tremendous scale, involves the hydrolysis of a fat using NaOH or KOH to yield glycerol and carboxylate salts (the soap)
Saponification
Spherical clusters of hundreds of soap molecules
Micelles
Lipids found in the essential oils of many plants and whose carbon skeletons are made up of isoprene units joined in a regular, heat-to-tail way
Terpenes
These biomolecules are polyhydroxy aldehydes, polyhydroxy ketones, or compounds that can be hydrolyzed to them
Carbohydrates
Monosaccharides considered as the most important ketose which occurs in fruits
(-) -fructose
