Miyaura borylation/Suzuki-Miyaura coupling (MBSC) sequence of 4-bromo-2,4′-bithiazoles with halides: straightforward access to a heterocylic cluster of D-series of thiopeptide GE2270

Herein, palladium-catalyzed Miyaura borylation of 4-bromo-2,4'-bithiazoles followed by Suzuki-Miyaura cross-coupling reaction (named the MBSC process) with (hetero) aryl-and alkenyl halides is reported. This methodology offers rapid access to various 2',4-disubstituted 2,4'-bithiazole features including naturally-occurring 4-alkenylated and 4-pyridinylated 2,4'-bithiazoles. To prove its application, a concise approach for the synthesis of a heterocyclic cluster of the thiopeptide D-series antibiotic GE2270 is reported through a late-stage MBSC strategy.