Diagram illustrating the classical <a href="https://en.wikipedia.org/wiki/Asinger_reaction" class="extiw" title="en:Asinger reaction">Asinger reaction</a> of two <a href="https://en.wikipedia.org/wiki/Aldehyde" class="extiw" title="en:Aldehyde">aldehydes</a> in the presence of an <a href="https://en.wikipedia.org/wiki/amine" class="extiw" title="en:amine">amine</a> and elemental sulfur to generate a <a href="https://en.wikipedia.org/wiki/thiazoline" class="extiw" title="en:thiazoline">thiazoline</a>.
Bernanke's Crossbow
Own work based on: <a href="//commons.wikimedia.org/wiki/File:Asinger-Rkt.png" title="File:Asinger-Rkt.png">Asinger-Rkt.png</a> <i>by</i> <a href="https://de.wikipedia.org/wiki/User:Gnablahblah" class="extiw" title="de:User:Gnablahblah">de:User:Gnablahblah</a>