Author: Anonymous

Select the best reagents for the reaction below.  

Select the route that would most likely produce the desired results from the given starting material.I. (1) H2SO4 and heat;       (2) HBr II. (1) KOH in ethanol;      (2 HBrIII. (1) H2SO4 and heat;    (2) HBr + peroxidesIV. (1) potassium tert-butoxide in tert-butanol;    (2) HBr + peroxides

Using retrosynthetic synthesis, determine which compound(s) could lead to the alkyne shown below in a single step.  

Rank the following radicals in order of decreasing stability, putting the most stable first.

Bonus question Propose an efficient multi-step synthetic sequence to accomplish the transformation below. You need to enter your answer as follows : 1. …..   2. ….   3. ….  ect. The reagent/chemical and reaction condition should be entered in sequence and proper structure. No partial credit. 

Select the best word or phrase that completes each sentence: (addition, allylic substitution, decreases, faster, heterolysis, homolysis, increases, saturated, inductive effects, inhibitor, initiator, ionic, less, more, paired, radical resonance, selective, slower, unsaturated, unpaired, unselective, with, without)   A radical is a reactive intermediate with a single unpaired electron, formed by ………………………………… of a covalent bond.  Complete word/phrase and correct spelling (verbatim) is required. No partial credit.

Bonus question What is (are) the major organic product(s) obtained from the following reaction? 1. (2R,3R)-butanediol 2. (2S,3S)-butanediol 3. meso-2,3-butanediol ​

Which of the following is the initiation step for the monobromination of cyclohexane?

Rank the following radicals in order of decreasing stability (most stable to least stable).  

Predict the major product(s) for the following reaction.