Author: Anonymous

Upon treatment of 1-methylcyclopentene with NBS and irradiation with UV light multiple compounds (including stereoisomers) are produced, including the one shown below. How many compounds are formed in total?

Bonus question Provide an appropriate synthetic route to prepare 1,3-dibromopropan-2-ol from propene. 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, inductive effects, inhibitor, initiator, ionic, less, more, paired, radical, resonance, selective, slower, unpaired, unselective, with, without)   The stability of a radical …………………………… as the number of alkyl groups bonded to the radical carbon increases.  Complete word/phrase and correct spelling (verbatim) is required. No partial credit.

Select an appropriate synthetic route for the following equation.

Cyclic compound A has molecular formula C5H10 and undergoes monochlorination to yield exactly three different constitutional isomers. Which of the following shows compound A?

Write a program to find a number of terms required for the following sequence to just exceeds the value of the X variable given by the user.  Sum = 3+(3*3*3)+(4*4*4*4)+(5*5*5*5*5)+(6*6*6*6*6*6)+…. x=input(‘Enter number: ‘);

clc; clear;x = 0;ii = 3;for ii = 1:1:ii    ii = 2;    jj = 1;    while ii>jj        x = ii+jj;        jj = ii;    end    fprintf(‘%g%g’, ii,x)end

clc; clear;a = 0;for i = 0:1:3   a = i * i;    for i = 0:1:2        fprintf(‘%d’,a*i);        break;        fprintf(‘%d’,a+i);    end    continue;end

clc; clear;x = 7;while x > 4   for jj = 2:-2:3      if x >= 3         break;      end   end   for xx=2:2:3      if xx < 3         fprintf('%g', xx);         x = x - 3;      end   end   x = x - 2;   fprintf('%g', x+xx);end

Identify this stage of development: