A bissulfonate electrolyte additive forms a stable SEI film and passivates electrodes to improve Li-ion battery performance at high and low temperatures.
Phase-transfer catalysis with alkali metal hydroxide enables mild benzenesulfonyl synthesis with 60%+ yield and lower production cost.
A bissulfonate electrolyte additive stabilizes the SEI, passivates the cathode, and limits resistance growth across high and low temperatures.
Coupling formula II and III intermediates creates a convergent route that reduces reaction steps while improving Siponimod yield and purity.
Acidolysis of boron esters eliminates isomeric by-products while enabling safe large-scale production of alkali metal salts.