The Further extension of substrate scope. The aforementioned studies demonstrate that the benchstable benzylic boronate/ t BuOK combination (1:2 ratio) can function as a surrogate for benzyl potassium. Building on this finding, we conducted further experiments to explore its potential for reacting with other electrophiles, such as carbonyl derivatives (including benzophenone, benzaldehyde, and N-benzylideneaniline), chlorosilanes (such as iPr2SiHCl and Ph2MeSiCl), triphenylchlorogermane, triphenyltin chloride, disulfide, phenylselenenyl chloride, eschenmoser's salt, and others (Fig. ). Typically, these reactions proceed rapidly and align with the high reactivity of organometallic reagents. The resulting products (77-87), which contain a wide range of C-C and C-X bonds, were obtained in yields of 44-94%. It is worth highlighting that carbon dioxide (CO2), an abundant but unreactive molecule, can also serve as a suitable C1 electrophile . By directly bubbling dry CO2 through a reaction mixture of alkene/PhMe2SiBpin/ t BuOK, the corresponding silacarboxylation products (88-91) were obtained in high yields within an exceptionally short reaction time of just 30 seconds. This single-flask difunctionalization approach was also extended to other combinations. For example, based on a base-catalyzed 1,2-diboration reaction of aromatic alkenes with B2pin2, carboborylation reactions occur in moderate to good yields (92-96, 62-75% yields), as demonstrated by 5 examples collected in Fig. . Given that there are thousands of readily accessible electrophiles and the silyl or boryl group in the resulting products can be easily modified, we reasoned that this base-mediated bond-forming strategy could offer a versatile platform for accessing a vast range of chemical and molecular diversity.