Your email address will not be published. The named reaction – Stephen aldehyde synthesis, was named after its inventor Henry Stephen. It is important to note that the reaction is more efficient when aromatic nitriles are used instead of using aliphatic nitriles. stephen aldehyde synthesis 1) the original procedure has been modified: first the nitrile is dissolved in an inert solvent and the resulting solution is saturated with anhydrous HCl gas at 0 °C, then a solution of Stephen Reaction Mechanism Begins with the Addition of Gaseous Hydrogen Chloride to the Given Nitrile. Stephen Aldehyde Synthesis. Find out how LUMITOS supports you with online marketing. Treatment of the nitrile with a mixture of stannous chloride and hydrochloric acid yields the imine salt complex which is subsequently hydrolyzed to the aldehyde. 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Click here to learn about more named reactions. This imine intermediate is subjected to hydrolysis to yield the corresponding aldehyde. [1] In de eerste stap wordt met behulp van zoutzuur (HCl) en tin(II)chloride (SnCl 2 ) het iminiumzout [R-CH=NH 2 ] + Cl − gevormd. © 1997-2020 LUMITOS AG, All rights reserved, https://www.chemeurope.com/en/encyclopedia/Stephen_aldehyde_synthesis.html, Your browser is not current. This reaction involves the preparation of aldehydes (R-CHO) from nitriles (R-CN) using tin(II) chloride (SnCl2), hydrochloric acid (HCl) and quenching the resulting iminium salt ([R-CH=NH2]+Cl-) with water (H2O).[1].

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