Progress in Heterocyclic Chemistry, Volume 31 is the latest release in this annual review series commissioned by the International Society of Heterocyclic Chemistry (ISHC). Volumes in the series contain both highlights of the previous year's literature and articles on developing topics in heterocyclic chemistry. Chapters in this new release are written by leading researchers in their field and constitute a systematic survey of the important original material reported in the literature in of heterocyclic in 2018. As with previous volumes in the series, this updated volume will enable academics, industrial chemists and advanced students stay abreast of developments in heterocyclic chemistry.