Cover Picture: Cationic Gold(I) Complexes: Highly Alkynophilic Catalysts for the exo- and endo-Cyclization of Enynes (Angew. Chem. Int. Ed. 18/2004)

✍ Scribed by Cristina Nieto-Oberhuber; M. Paz Muñoz; Elena Buñuel; Cristina Nevado; Diego J. Cárdenas; Antonio M. Echavarren

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 20 KB
• Volume: 43
• Category: Article
• ISSN: 0044-8249
• DOI: 10.1002/anie.200490051

✦ Synopsis

Lauding the rings in the realm of metal‐catalyzed cyclizations, where many mechanistic shadows lie: Gold is master, particularly in reactions that proceed through metal cyclopropylcarbene intermediates. In their Communication on page 2402 ff., A. M. Echavarren and co‐workers report on their quest to discover cationic gold(I) complexes that selectively promote skeletal rearrangements and other enyne cyclizations under mild conditions.