Arnab Biswas

4 Questions 21 Answers 0 Followers

Questions related from Arnab Biswas

How to do mono formylation of N,N-diethyl-3-methoxybenzamide?

I have attempted the formylation of the above mentioned compound using a very well reported protocol using secondary Butyl Lithium and TMEDA at - 78 degrees Celsius. I have done it quite a few...

09 February 2021 2,943 2 View

How does one determine the most suitable mobile phase to separate 2 very close spots in TLC?

I recently tried to isolate a compound which apparently looked like a single spot in the TLC of the reaction mixture but actually was 2 spots when I was doing TLC when running Column...

10 April 2017 5,940 15 View

When running HPLC for a new chiral compound for the 1st time how does one zero in on a chiral column to separate the peaks?

When I run new samples I use the method of trial and error to get the perfect column to separate the 2 enantiomers of a compound(for racemic case).How does one narrow in on a range of columns...

14 January 2017 766 8 View

What are the different ways to consume the limiting reactant(by TLC examination) in an organic reaction?

I have encountered many organic reactions where I had taken 2 reactants in the molar ratio of 1:2, 1:1.5 etc but after a while TLC examination showed that the limiting reactant(which has been...

08 August 2016 394 13 View