Perthio- and Perseleno-1,3-butadienes, -but-1-ene-3-ynes, and -[3]-cumulenes: One-Step Syntheses from 1,4-Dilithio-1,3-butadiyne.

✍ Scribed by Eric Block; Frank Tries; Chunhong He; Chuangxing Guo; Mohan Thiruvazhi; Paul J. Toscano

• Publisher: John Wiley and Sons
• Year: 2003
• Weight: 136 KB
• Volume: 34
• Category: Article
• ISSN: 0931-7597
• DOI: 10.1002/chin.200333175

✦ Synopsis

Organo-selenium compounds

Organo-selenium compounds S 0130

Perthio-and Perseleno-1,3-butadienes, -but-1-ene-3-ynes, and -[3]-cumulenes: One-Step Syntheses from 1,4-Dilithio-1,3-butadiyne. -1,4-Dilithio-1,3-butadiyne is easily generated by lithiation of a freshly prepared solution of 1,3-butadiyne (II). It is coupled with various diorganodichalcogenides to afford [3]-cumulenes (IV), 1,3-butadienes (VI) and (IX), but-1-ene-3-ynes (VII) and 1,3-butadiynes (XI). -(BLOCK*, E.;