Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1978-03-29
1979-04-17
Sneed, Helen M. S.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
C07F 502
Patent
active
041500571
ABSTRACT:
Disclosed is a method of synthesis and the compound synthesized B.sub.10 ub.12 [(CH.sub.3).sub.2 S].sub.2. The method employs the starting compound (R.sub.4 N).sub.2 B.sub.10 H.sub.10, as a source of the ten-boron ion (e.g., B.sub.10 H.sub.10.sup.-2), in which the starting compound, wherein R equals an alkyl with the formula C.sub.n H.sub.2n+1 and wherein n equals 2, 3, or 4, is converted to Li.sub.2 B.sub.10 H.sub.10 by ion-exchange. The Li.sub.2 B.sub.10 H.sub.10 is reacted with HCl in (CH.sub.3).sub.2 S solution to produce the compound B.sub.10 H.sub.12 [(CH.sub.3).sub.2 S].sub.2, a precursor compound for synthesizing carboranyl burning rate accelerators. The precursor compound is reacted with propargyl propionate if the interest is to synthesize carboranylmethyl 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.
REFERENCES:
patent: 3154561 (1964-10-01), Muetterties
patent: 3296260 (1967-01-01), Knoth
patent: 3489812 (1970-01-01), Marshall et al.
Bellamy Werten F. W.
Gapcynski William G.
Sneed Helen M. S.
The United States of America as represented by the Secretary of
Voight Jack W.
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