Anhydrous technique I
I am but a lowly organic chemist - I cannot aspire to the rigour of the synthetic inorganic chemist. Most of my stuff is oxygen tolerant - I have no real need to avoid the Gas of Life.
However, there is a certain technique, Germanic in its origins, a simplification of Schlenk technique - that allows synthetic organic manipulations to be carried out with the peace of mind that nasty interfering nucleophilic water will not be a factor in the success or unsuccess of your reaction. Generally speaking, if you follow this technique, you can rest assured that you are working in conditions that are as anhydrous as you need to be for 99% of synthetic organic chemistry.
NB: Trace water has been known to catalyse certain reactions and indeed in some circumstances is essential for the reaction to proceed, but we usually work on the basis that Water is Bad during the course of the reaction.
However, there is a certain technique, Germanic in its origins, a simplification of Schlenk technique - that allows synthetic organic manipulations to be carried out with the peace of mind that nasty interfering nucleophilic water will not be a factor in the success or unsuccess of your reaction. Generally speaking, if you follow this technique, you can rest assured that you are working in conditions that are as anhydrous as you need to be for 99% of synthetic organic chemistry.
NB: Trace water has been known to catalyse certain reactions and indeed in some circumstances is essential for the reaction to proceed, but we usually work on the basis that Water is Bad during the course of the reaction.