IMPROVED SYNTHESIS OF [closo-1-CB9H10](-) ANION AND NEW C-SUBSTITUTED DERIVATIVES

The Brellochs method was utilized to gain access to the [closo-1-CB9H10](-) anion (1). Previous work describing the details of the synthesis of 1 via the [closo-2-CB9H10](-) anion (2) was brief and insufficient. Therefore, we report an optimized procedure for the synthesis of 1, the preparation of the unknown C-halogenated series using N-halosuccinimides and bis(benzene-sulfonyl) fluoroamine, and the unknown C-methylated product using CH3I. NMR properties and regularities within the series were also investigated.