1. A common synthetic annulation reaction is the Robinson annulation. 2. A common synthetic annulation reaction is the Robinson annulation . 3. Alkynyl thioethers and ynamines have been used as reactants in the annulation reaction. 4. The Danheiser benzannulation is a regiocontrolled phenol annulation . 5. This annulation provides an efficient route to form an aromatic ring in one step. 6. Specifically, the synthesis of cortisone is completed through the use of the Robinson annulation . 7. An efficient one-pot route entails annulation of cyclopentadiene with unsaturated C 5-synthons. 8. The Michael addition is an important tandem sequence of Michael and aldol additions is the Robinson annulation . 9. They are of a light yellowish-brown color, the legs having light-dark annulation . 10. The quaternary carbon was introduced by asymmetric Robinson annulation reaction mediated by an L-proline derivative.
