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Regioselectivity donor/acceptor coupling

By changing the anchoring sites of the bis-ester template, it is possible to reverse completely the regioselectivity of the coupling [97 b]. For example, when a phthalyl tether was used to link the 2-OH of a glucosyl acceptor to the 6-OH of a mannosyl donor to... [Pg.346]

The synthesis of a PPV derivative, 94, with donor (di-n-hexylamino) and acceptor (nitro) substituents attached regioselectively to the PPV backbone, was published by Yu et al. following the Heck-type cross coupling approach [118] starting from an AB-type monomer (95). The red-orange polymer (94), which is soluble in THE, chloroform and 1,2-dichloroethane, displays a number-average molecular weight M of about 12,000. [Pg.208]

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See also in sourсe #XX -- [ Pg.92 ]



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Regioselective couplings

Regioselectivity coupling

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