Blog

Is the double bond indicated by an arrow in Crestor® (rosuvastatin), a medication used to reduce cholesterol, classified as E, Z, or neither?

Bonus question Which of the following structures is a correct wedge/dash drawing of the following Fischer projection?

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):     Achiral molecules that contain chirality centers are …………………………….          Complete word/phrase and correct spelling (verbatim) is required. No partial credit.

Which of the following structures does not have a plane of symmetry?

Which of the following is a Newman projection of an eclipsed conformation for ethane?

Which of the following conformation is highest in energy?  

Which of the following is a correct Fischer projection of the following compound?

Which of the following is the highest energy chair conformation of the following cyclohexane?

Which of the following is a Newman projection of a staggered conformation for propane?

Which of the following is (are) a meso compound(s)? I. 2,4-dichloropentane II. 1,3-dimethylcyclopentane III. 2,3-dichloropentane