R- and S- nomenclature of chirality centers

In the simplest and most common case, a chirality center is characterized by an atom that has four different groups bonded to it in such a manner (e.g. tetrahedral) that it has a non-superimposable mirror image.

       Assigning R and S Configurations With the Cahn-Ingold-Prelog (CIP) Rules

• Identify each of the chirality centers.
• Assign the priority (1 to 4) to each group attached to the chirality center
• 
  
  
  

If the two atoms have same atomic number then highest atomic weight atom will be the highest 

priority group or atom.

e.g. (D>H)

CLASS XI 

                                                                      NEET                                                      

 

 JEE (MAIN) SYLLABUS 2021

A to Z Name Reaction

 1.Aldol Condensation:

An aldol condensation is a condensation reaction in organic chemistry in which an enol or an enolate ion reacts with a carbonyl compound to form a β-hydroxyaldehyde or β-hydroxyketone (an aldol reaction), followed by dehydration to give a conjugated enone.

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About The Author

  I am Kuntal Maity, completed M.Sc. from Vidyasagar University, Midnapore , West Bengal, India.(2013)

and B.Ed (2014). January 2014 I was appointed as a Guest Teacher in organic chemistry at Bajkul Milani Mahavidyalaya till February 2017. After that I had to join Dhawel Jr. Basic School, malda as a Primary Teacher ( WB Gov.) at 14th February 2017 to 25th January 2019 with different experience. In January 28th I join as Asst. Teacher of Chemistry at Mugberia Gangadhar High School(H.S). At present I am working here with great experience as the School is nearly 10 km. from my house.

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