Annual Reports in Organic Synthesis—1990 is a bibliography of papers on organic synthesis from primary chemistry journals. Topics covered range from carbon-carbon bond forming reactions to oxidations, reductions, synthesis of heterocycles, and synthetic preparations. This book consists of seven chapters and begins with a list of papers on carbon-carbon bond forming reactions, including carbon-carbon single, double, and triple bonds as well as cyclopropanations and synthesis through organometallics. The following chapters focus on oxidations and reductions; methods of synthesizing heterocyclic systems such as lactams and lactones; and the use of protecting groups. Synthetically useful transformations are considered next, with emphasis on functional group synthesis, additions to alkenes or alkynes, and sulfur compounds. The final chapter deals with other reviews of topics ranging from asymmetric synthesis and molecular recognition to reactive intermediates; organometallics and organometalloids; halogen compounds and halogenation; and natural products. This monograph will appeal to organic chemists, both specialist and nonspecialist in synthesis.