A novel and efficient route to (E)-alk-1-enyl boronic acid derivatives from (E)-1-(trimethylsilyl)alk-1-enes and a formal Suzuki–Miyaura cross-coupling reaction starting with vinylsilanes
Representative aryl, vinyl and alkynyl bromides undergo efficient Pd-catalyzed cross coupling with trans-1-(9-borabicyclo[3.3.1]non-9-yl)-2-(trimethylsilyl)ethene (1) under basic conditions to produce the corresponding trans styryl-, dienyl- and enynylsilanes (58–89%).