Patent ID: 7524477
Filing Date: 2009-04-28
Classification: C01B,C07F,H01L

Abstract:
1. A method of preparing B 18 H 22 from boric acid comprising the steps of: (a) preparation of borate ester from boric acid and a primary, secondary, or tertiary alcohol; (b) reducing the borate ester with NaAIH (c) preparing R (d) pyrolysis of solid R (e) oxidation of B (f) contacting a solution of B (g) decomposing the resultant acid to give B (h) extracting the residue with solvent in which boric acid byproduct is insoluble; (i) repeating steps (g) and (h) until no further B (j) contacting the residues with solvent to dissolve any B (k) repeating steps with (f)-(j) at least once; and (l) concentrating the combined hydrocarbon solutions to afford B