The Birch reduction is a one-election reduction of aromatic rings with alkali metals (Li, Na, K) dissolved in liquid ammonia. This reaction provides an alternative to catalytic hydrogenation, which is difficult to achieve with aromatics due to their extended conjugation. However, Birch reductions are generally avoided for scale-up due to the complexities of the large-scale process.
A Birch reduction performed using SiGNa material removes the hazards of alkali metals and does not require liquid ammonia or cryogenic temperatures. The SiGNa method improves yields, shortens reaction times, and simplifies workup procedures.
Highly loaded, free-flowing stabilized alkali metal powders with reactivity as high as the parent metal.
Highly loaded, atomically dispersed alkali metal powder (includes lithium) wtih more extensive reactivity than the parent metal.
Currently SiGNa is working on the next element in the alkali metal family, Lithium. A number of new discoveries have been made. Read More