- any of the group of reagents produced by the interaction of magnesium and an organic halide, usually in the presence of an ether, and having the general formula RMgX, where R is an organic group and X is a halogen: used in the Grignard reaction.
Origin of Grignard reagent
First recorded in 1900–05; see V. Grignard
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- chem any of a class of organometallic reagents, having the general formula RMgX, where R is an organic group and X is a halogen atom: used in the synthesis of organic compounds
C20: named after Victor Grignard (1871–1934), French chemist