Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
Table 1 Synthesized α, β-unsaturated ketones (3a-j) and their pyrazoline derivatives (4a-e and 5a-b) with their yield, Rf value and melting points. a40% Ethyl acetate: hexane (3a-j), b10% MeOH: chloroform (4a-e and 5a-b).
