Abstract

Abstract Ca(BH2S3)2 is easily prepared by metathetical reaction between NaBH2S3 and CaCl2 in THF. Ca(BH2S3)2 is much more stable than NaBH2S3 therefore, is a more practical reagent. Sulfurated calcium borohydride can easily reduce aryl nitro and aryl azido functions to their amines in high yields in refluxing THF. Reduction of nitro groups is accompanied with regioselectivity. Very high chemoselectivity is also observed for the reduction of an azido functional group in the presence of nitro functionality.

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