Cycloaddition of zirconacyclopent adienes to alkynes: Selective formation of benzene derivatives
- Institute for Molecular Science and the Graduate Univ. for Advanced Studies, Myodaiji, Okazaki (Japan)
Metallacyclopentadienes containing transition metals such as cobalt, rhodium and titanium have been known to react with one equiv of alkynes to give benzene derivatives. This type of reaction is very attractive and very useful, since metallacyclopentadienes can be easily prepared from two equiv of alkynes. One of the major problem of this reaction concerns the control of combination of alkynes. It has been difficult to prepare cleanly the unsymmetrical metallacyclopentadienes using these metals by the intermolecular coupling of two different alkynes. This is the reason why there is no report for the selective formation of benzene derivatives from three different alkynes in high yields. Here, the authors would like to report a selective benzene formation from three different alkynes and related reactions using zirconocene compounds.
- OSTI ID:
- 250080
- Report Number(s):
- CONF-9508100-; TRN: 96:002623-0018
- Resource Relation:
- Conference: 8. IUPAC symposium on organometallic chemistry directed towards organic synthesis, Santa Barbara, CA (United States), 6-10 Aug 1995; Other Information: PBD: 1995; Related Information: Is Part Of Eight IUPAC symposium on organometallic chemistry directed towards organic synthesis (OMCOS 8); PB: 375 p.
- Country of Publication:
- United States
- Language:
- English
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