Abstract
AbstractThis review is an update to the earlier Science of Synthesis contribution describing methods for the synthesis of alkenes by (transfer) hydrogenation of alkynes and allenes, with a focus on catalytic methods reported since 2010. Representative methodologies for the selective preparation of terminal alkenes and Z- or E-alkenes are summarized, with the discussion divided into methods based on heterogeneous or homogeneous catalysis; these sections are then subdivided into hydrogenation or transfer-hydrogenation processes.