Accession Number:

ADA149084

Title:

A Metal-Catalyzed Rearrangement of Alkene-Alkynes and the Stereochemistry of Metallacyclobutene Ring Opening.

Descriptive Note:

Technical rept.,

Corporate Author:

COLUMBIA UNIV NEW YORK DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

1984-12-27

Pagination or Media Count:

17.0

Abstract:

A molecular rearrangement is described that demonstrates how alkyl-metal-carbenes are generated when metal derivatives combine with acetylenes and olefins and shows that tungsten-carbenes not stabilized by heteroatoms insert into acetylenes. It reveals that this insertion can be remarkably stereo-selective. With catalytic amounts of carbene-tungsten carbonyls, biphenyls substituted at the 2 and 2 positions by vinyl and acetylene groups yield isomeric 9-vinylphenanthrenes. With stoichiometric amounts, they yield 9-vinyl-phenanthrenes whose structures contain the carbene moiety of the metal-carbene. Author

Subject Categories:

  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE