Cationic rhodium(I)/segphos-catalyzed cycloisomerization of 1,6- and 1,7-diynes in the presence of 1,2-cyclohexanedione

Autor: Ken Tanaka, Yousuke Otake, Masao Hirano
Rok vydání: 2007
Předmět:
Zdroj: Organic letters. 9(20)
ISSN: 1523-7060
Popis: We have developed the first catalytic cycloisomerization of 1,6- and 1,7-diynes leading to trienes and vinylpyrroles by using a cationic rhodium(I)/Segphos complex (2.5−10 mol %) and 1,2-cyclohexanedione (100 mol %). 1,2-Cyclohexanedione may effectively occupy vacant coordination sites and thus promote the present cycloisomerization.
Databáze: OpenAIRE