Regioselective Cyclotrimerization of Phenylacetylenes to 1,2,4-Triarylbenzenes Catalyzed by Iridium—Diphosphine Complexes.
✍ Scribed by Erica Farnetti; Nazario Marsich
- Publisher
- John Wiley and Sons
- Year
- 2004
- Weight
- 72 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0931-7597
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📜 SIMILAR VOLUMES
Butadienemonoxide reactswitbbighregioselectively withanhydridesto givepreferentially diestersof 2-buten-l,4-diolin presenceofpalladiumphosphinecomplexes. Reaction regioselectivityis shongly influencedby the nature of palladiumIigand,anhydrideand solvent. @ 1997Publishedby Elsevier Science Ltd. Reac
## Abstract A highly regioselective intermolecular cyclotrimerization of terminal alkynes has been developed based on the use of the cationic rhodium(I)/DTBM‐Segphos complex. This method can be applied to a variety of terminal alkynes to provide 1,2,4‐trisubstituted benzenes in high yield and with