Blog

Match the Newman projection for the conformation of 2-methylbutane to the indicated position on the potential energy diagram.                                       ​ A B C D Conformation A is represented by Roman numeral ____. (enter the Roman number. No other numbers will be accepted)

Which of the following is the correct structure for the compound (S)-3-methylheptane?

Identify the correct chair conformation of cyclohexane showing all of the axial hydrogen atoms.

What is the correct order of the Cahn-Ingold-Prelog ranking of the following substituents as used in assigning R and S configurations of chiral centers? (higher ranking > lower ranking) ​ 1. −C≡CH 2. −CH2NH2 3. −NHCH3 4. −CN ​

Which of the following structures represents trans-1,3-dimethylcyclohexane?

Is the double bond of Singulair® (montelukast), a medication used to manage asthma, classified as E, Z, or neither?

Select the word or phrase that complete each sentence (constitutional isomers, diastereomers, enantiomers, meso compounds, higher, lower, reaction, addition, carbocation, carbanion, nucleophile, electrophile, elimination, heterolysis, homolysis, reagent, substitution, stronger, weaker, charge, concerted, two step, SN1, SN2, racemization, hyperconjugation, alkyl halides, inversion):     Stereoisomers that are nonsuperimposable mirror images of each other are called……………………… Complete word/phrase and correct spelling (verbatim) is required. No partial credit.

Which of the following choices represents the Fischer projection of the compound shown?

Which arrow(s) indicates chiral center(s) in the compound shown?

Which statement is correct concerning the relative stabilities of the two conformations, A and B, below?