New polymeric sulfide-borane complexes: convenient hydroborating and reducing reagents

New polymeric borane adducts have been synthesized from polymeric sulfides, which are solids with a minimal odor. Adducts containing a high concentration of borane have significant stability and are soluble in tetrahydrofuran. They act as hydroborating and reducing reagents with behavior similar to that of borane-methyl sulfide, making them attractive borane sources. [GRAPHICS] .