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Grade 12th passOrganic Chemistry

need a little explanation of options...

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Profile image of mansi dabriwal
11 Years agoGrade 12th pass
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3 Answers

Profile image of grenade
ApprovedApproved Tutor Answer11 Years ago
it gives syn addition 
and thus the product formed is Glycol
since in the first  option you get the correct anser because syn additionin this case will form erythreo (A)
in the racemic diol you will have the compound threo
approve if useful 
Profile image of grenade
11 Years ago
is the explaination quite helpful to you
Profile image of ng29
ApprovedApproved Tutor Answer11 Years ago
alkene gives syn addition with
  1. alkaline KMnO4  (bayer reagent)
  2. OsO4
  3. BH3​​      
ALKENE gives anti addition with 
  1. Br2
  2. HCOOOH​
and remember this  C A R  rule  if cis is given  and anti reaction occurs then raceimic mixture will be formed 
 
APPROVE IF USEFUL
 

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