\u003cp\u003e\u003ci\u003eProgress in Heterocyclic Chemistry (PHC), Volume 28\u003c/i\u003e is an annual review series commissioned by the\u003ci\u003e \u003c/i\u003eInternational Society of Heterocyclic Chemistry (ISHC). Volumes in the series contain both highlights of the previous yearâs literature on heterocyclic chemistry and articles on new and developing topics of particular interest to heterocyclic chemists. \u003c/p\u003e \u003cp\u003eThe highlight chapters in Volume 28 are all written by leading researchers and constitute a systematic survey of the important original material reported in the literature of heterocyclic chemistry during 2015. Additional articles in this volume include Semi-conjugated Heteroaromatic Rings and beta-Lactam Chemistry.\u003c/p\u003e \u003cp\u003eAs with previous volumes in the series, Volume 28 will enable academic and industrial chemists, and advanced students, to keep abreast of developments in heterocyclic chemistry in a convenient way.\u003c/p\u003e\u003cul\u003e \u003cli\u003eRecognized as the premiere review of heterocyclic chemistry\u003c/li\u003e \u003cli\u003eIncludes contributions from leading researchers in the field\u003c/li\u003e \u003cli\u003eProvides a systematic survey of the important 2015 heterocyclic chemistry literature\u003c/li\u003e \u003cli\u003ePresents articles on new and developing topics of interest to heterocyclic chemists\u003c/li\u003e\u003c/ul\u003e