Synthesis of anti-vicinal diboronates from diarylethynes and B2pin2

Anti-vicinal diboronates were fabricated from easily available diarylethynes and Bpinvia a basecatalyzed domino-borylation-protodeboronation(DBP)strategy under transition-metal-free conditions.Under the standard conditions,reactants with a range of different classes of functional groups on the rings,such as Me O,Me S,CFO,MeN,TMS,I,Br,Cl,F,and the thiophene ring,were tolerated.Downstream transformation of the vicinal diboronates provided a facile pathway for obtaining vicinal diols by mild oxidation with Na BO,and a new deuteriation technique was developed in order to acquire1,2-diarylethanes-1,2-dand 1,2-diarylethanes-1,1,2,2-d.The new deuteriation strategy developed in this study may provide a new research direction for deuteriation chemistry.