Accession Number : ADD006359

Title :   Method for Preparation of a Carboranyl Burning Rate Accelerator Precursor.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Sayles,David C

Report Date : 17 Apr 1979

Pagination or Media Count : 7

Abstract : Disclosed is a method of synthesis and the compound synthesized B10H12(CH3)2S)2. The method employs the starting compound (R4N)2B10H10, as a source of the ten-boron ion (e.g., B10H10-2), in which the starting compound, wherein R equals an alkyl with the formula C(n)H(2n + 1) and wherein n equals 2, 3, or 4, is converted to Li2B10H10 by ion-exchange. The Li2B10H10 is reacted with HCl in (CH3)2S solution to produce the compounds B10H12((CH3)2S)2, a precursor compound for synthesizing carboranyl burning rate accelerators. The precursor compound is reacted with propargyl propionate if the interest is to synthesize carboranylmenthyl propionate; 1-octyne to synthesize n-hexylcarborane; or propargyl ethyl sulfide or propargyl propyl sulfide to synthesize carboranylmethyl ethyl sulfide or carboranylmethyl propyl sulfide, respectively. (Author)

Descriptors :   *Patents, *Carboranes, *Decaboranes, *Synthesis(Chemistry), *Catalysts, Alkyl radicals, Organic sulfur compounds, Sulfides, Burning rate, Composite propellants, Double base rocket propellants

Subject Categories : Organic Chemistry
      Solid Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE