From: antonio regla (areglac$##$yahoo.com)
Date: Mon Feb 28 2000 - 14:16:03 EST
Dear List Members:
Does anyone know of a good literature reference on
ways to determine pre-work-up yields in organic
reactions? Usually it is very hard to reproduce
literature yields, they are too high most of the
times, which makes some of us think if the yield
reported is the isolated yield or before work-up. Some
journals are very strict and require authors to
specify which yields they are referring to, but others
are not strict about it. The nature of reaction
mixtures is usually quite complex, as one finds
multiple phases, a mixture of by-products of unknown
origin, ionic and covalent products. Are there any
guidelines in the literature on how to analyze such
mixtures as to determine the yield of the desired
product. I have been told by some grad students that
in order to please their research advisors sometimes
they exaggerate the yields, which in my view is
nothing more than cheating. I would like to recommend
the practice of determining pre-work up yields, and I
will appreciate any information you may have regarding
this issue.
Thanks in advance for your help.
Sincerely.
Antonio Regla
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