Improved synthesis of [closo-1-CB9H10]– anion and new C-substituted derivatives

Abstract

The Brellochs method was utilized to gain access to the [closo-1-CB9H10]–anion (1). Previous work describing the details of the synthesis of1via the [closo-2-CB9H10]–anion (2) was brief and insufficient. Therefore, we report an optimized procedure for the synthesis of1, the preparation of the unknown C-halogenated series usingN-halosuccinimides and bis(benzenesulfonyl)fluoroamine, and the unknown C-methylated product using CH3I. NMR properties and regularities within the series were also investigated.