1. A textbook example is the reaction of but-3-en-2-one with NaCN/HCN to yield either cyanohydrin (direct addition of the nucleophilic cyanide to the carbonyl carbon atom) if the reaction is peformed at 5–10 °C, or 4-oxopentanenitrile (Michael-type addition of the cyanide) if the reaction is carried out at 80 °C: J.Clayden , N.Greeves and S.Warren , Organic Chemistry , Oxford University Press , 2nd edn, 2012 , p. 504
2. Since molecular oxygen has an influence on the course of many chemical polymerisation reactions, it usually must be eliminated carefully in order to obtain desired polymeric products: D.Braun , H.Cherdron , M.Rehan , H.Ritter and B.Voit , Polymer Synthesis: Theory and Practice , Springer-Verlag , Berlin Heidelberg , 4th edn, 2005 , p. 63
3. H.McGee , On Food and Cooking. The Science and Lore of the Kitchen , Unwin Hyman Ltd. , London , 1984
4. 1,500 scientists lift the lid on reproducibility
5. Reproducibility in Chemical Research