Study of the Hetero-[4+2]-Cycloaddition Reaction of Aldimines and Alkynes. Synthesis of 1,5-Naphthyridine and Isoindolone Derivatives
- Egileak:
- Concepción Alonso , María González, Francisco Palacios, Gloria Rubiales
- Urtea:
- 2017
- Aldizkaria:
- The Journal of Organic Chemistry
- Liburukia:
- 82
- Hasierako orria - Amaierako orria:
- 6379 - 6387
- Deskribapena:
-
Both experimental and computational studies for the cycloaddition reaction between N-(3-pyridyl)aldimines and acetylenes where 1,5-naphthyridines are obtained are reported. The reaction of benzaldimine with a methoxycarbonyl group in position 2 with phenyl acetylene, styrene, and indene afforded polycyclic isoindolone derivatives. The mechanism of reaction of N-(3-pyridyl)aldimines with olefins can be explained by an asynchronous [4+2] cycloaddition; in the case of acetylenes, the obtained results suggest a stepwise mechanism through a 3-azatriene.