Feb 17, 2007 09:57
17 yrs ago
1 viewer *
English term

giving the product in 97% in enantiomeric excess

English Science Chemistry; Chem Sci/Eng
The text is a patent application on an enantiomeric synthesis method.

"The reaction proceeds within 5 minutes giving the (R)-alcohol in 97% in enantiomeric excess."

Would you say that the figure 97% refers to the total yield or to the enantiomeric excess?

Responses

+3
5 mins
Selected

in 97% enantiomeric excess

Althiugh the phraee has an error, I would say they are referring to the level of enantimeric excess, not the overall yield.

--------------------------------------------------
Note added at 8 mins (2007-02-17 10:05:29 GMT)
--------------------------------------------------

Therefore the percentage term refers to the enantiomeric excess (97% - R) and not rhe yield of the racemic mixture.

--------------------------------------------------
Note added at 9 mins (2007-02-17 10:06:21 GMT)
--------------------------------------------------

Typos seem to be in fashion today!!!
Peer comment(s):

agree Richard Benham : O srr ypi nrvrt mkae tpyos!
1 min
agree Dr. Andrew Frankland : Or simply 97% ee. Any chemist would understand that
2 hrs
agree
agree Gillian Scheibelein : Wikipedia explains it nicely: http://en.wikipedia.org/wiki/Enantiomeric_excess
4 hrs
Something went wrong...
4 KudoZ points awarded for this answer. Comment: "Thanks! That's what I thought, but I wanted to eliminate any doubt. "
Term search
  • All of ProZ.com
  • Term search
  • Jobs
  • Forums
  • Multiple search