Enynes, conjugated cross-benzannulation with diynes

D. [4 + 2] ANNULATION OF CONJUGATED ENYNES WITH DIYNES (CROSS-BENZANNULATION)... [Pg.1641]

TABLE 9. Pd-Catalyzed Cross-Benzannulation of Conjugated Enynes with Diynes (2)... [Pg.1643]

The Pd(0)-catalysed 4 -i- 2-cross-benzannulations of conjugated enynes (167) with diynes (166) and triynes yield substituted benzene derivatives (168) (Scheme 64). " Monosubstituted conjugated enynes readily undergo 4 - - 2-homodimerization in the presence of Pd catalyst to produce 4,o - and 2,6-disubstituted styrenes. ... [Pg.538]

Gevorgyan, V., Takeda, A., Homma, M., Sadayori, N., Radhakrishnan, U. and Yamamoto, Y. (1999) Palladium-catalyzed [4-1-2] cross-benzannulation reaction of conjugated enynes with diynes and triynes. Journal of the American Chemical Society, 121(27), 6391-6402. [Pg.256]

Big Chemical Encyclopedia