Recent Advances in Multiple Heterohelicenes

Multiple heterohelicenes involing one or more heteroatoms in the helical backbone, in light of the importance of their spanning disciplines of the chemical and material sciences, have thus attracted significant interest from various research fields. In this review, we will specially concentrate on current progress in the chemistry of multiple heterohelicenes especially of those with boron, nitrogen, oxygen, silicon, or phosphorous atoms fused into the skeletons over the past decade (2012-2022). For each multiple heterohelicenes, their synthesis, structural features, electronic and chiroptical properties, as well as examples of their applications, are collected.