Synthesis and Reactions of Allenylmetal Compounds

Abstract

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.

2.05 Propargyl and Allenyl Organometallics

“…With regard to more detailed coverage of organometallic allenyl/ propargyl reagents, a number of brilliant reviews are kindly suggested to the reader. [2][3][4][5][6] Direct preparation of allenylmagnesium reagents from magnesium metal and propargyl halides has been used quite extensively; however, the use of catalytic amounts of mercury chloride is required (the exact nature of this beneficial effect remains poorly understood). 9 Kobayashi and coworkers assumed that the lack of elaborated studies in some areas of propargyl Grignard chemistry could be associated with the necessity of poisonous additives; this consideration resulted in the development of an improved direct Grignard synthesis methodology for allenyl/propargyl reagents.…”