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Metalated, cross-coupling, tetrakis

Enynes can also be synthesized in excellent yields with high regio- and stereoselectivity by transition metal catalyzed cross-coupling reaction. Thus, ( >l-alkenyl-disiamylboranes react with 1-halo-1-alkynes in the presence of catalytic amount of tetrakis(tripheny]phosphine)palladium to afford conjugated trans enynes (Eq. 100)145). [Pg.66]

This method is an adaption of the U. S. Borax Research group s procedure that Illustrates a practical and efficient method for the synthesis of tetra(alkoxo)diborons. Several (alkoxo)diborons, such as tetra(methoxo)-,3 bis(catecholato)-, and bis(pinacolato)diboron (1). are synthesized from tetrakis(dimethylamino)diboron. The diborons are excellent reagents for the synthesis of various organoboronic esters via the transition metal-catalyzed addition and cross-coupling reactions. ... [Pg.263]

See other pages where Metalated, cross-coupling, tetrakis is mentioned: [Pg.185]    [Pg.145]    [Pg.877]    [Pg.548]    [Pg.181]    [Pg.277]    [Pg.466]    [Pg.295]    [Pg.2107]    [Pg.418]    [Pg.276]    [Pg.69]    [Pg.24]    [Pg.460]    [Pg.707]   


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Metalated, cross-coupling, tetrakis palladium

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