A cross-coupling with

Under the Suzuki reaction condition and in the presence of 2,3-bis(bro-momethyOquinoxaline 149, Song unexpectedly discovered that 140 was able to provide the self-coupling product, namely bifuran 150 in excellent yield (Scheme 31). Similarly, 150 produced quaterfuran 152 via 151, from which taliiran 153 was also obtained via a cross-coupling with 144 under identical conditions (Scheme 31). A variety of symmetrical and unsymmetrical furan-3,4-diyl oligomers were... 

Potential difference in reactivity between two G-B bonds allowed the transformation of l,2-bis(boryl)-l-alkenes to 1-alkenylboranes via a cross-coupling with the aryl, 1-alkenyl, benzyl, and cinnamyl halides (Equation (23)).211-213 This tandem procedure synthetically equivalent to a yy/z-carboboration of alkynes was used for synthesizing Tamoxifen derivatives via stepwise double coupling with two of the G-B bonds.212,213 Hydrogenation of the resulting bisborylalk-enes with a chiral rhodium catalyst is synthetically equivalent to an asymmetric diboration of alkenes (Equation (24)).214... 

The enol triflates derived from tetrahydropyran-2-ones undergo a cross-coupling with benzenethiols catalysed by Ni(0) that gives the 6-arylsulfanyl-3,4-dihydro-2//-pyrans, readily oxidised to the stable sulfoxides. The latter undergo facile conversion to the a-lithiated enol ethers <03S584>. 

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