(12) United States Patent (10) Patent No.: US 6,713,631 B2 Cho Et Al
USOO6713631 B2 (12) United States Patent (10) Patent No.: US 6,713,631 B2 Cho et al. (45) Date of Patent: Mar. 30, 2004 (54) PREPARATION METHOD OF 2,2'-BI-1H Benjamin Fieselman, David N. Hendrick, and Galen D. MIDAZOLE USING GLYOXAL AND AN Stucky, "Synthesis, Electron Paramagnetic Resonance, and AMMONIUM SALT Magnetic Studies of Binuclear Bis(m-Cyclopenta (75) Inventors: Jin Rai Cho, Daejeon (KR); Soo dienyl)Titanium(III) Compounds with Bridging Pyrazolate, Gyeong Cho, Daejeon (KR); Eun Mee Goh, Daejeon (KR); Jae Kyung Kim, Biimidazolate, and Bibenzimidazolate Anions”, Inorganic Seoul (KR) Chemistry, vol. 17, No. 8, 1978, pp. 2078-2079. (73) Assignee: Agency for Defense Development, F. Holmes, K.M. Jones, and E.G. Torrible, “Complex-Form Daejeon (KR) ing Agents Similar to 2,2'-Bipyridyl), Some Ligands Con taining Imidazole Part. I”, J. Chemical Society, 1961, pp. (*) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 4790 4791. U.S.C. 154(b) by 0 days. Donald P. Matthews, Jeffery P. Whitten, James R. McCarthy, (21) Appl. No.: 10/383,196 “A Convenient Synthetic Route to 2,2'-Biimidazole', Syn thesis, Apr. 1986, pp. 336–337. (22) Filed: Mar. 6, 2003 (65) Prior Publication Data * cited by examiner US 2003/0199700 A1 Oct. 23, 2003 (30) Foreign Application Priority Data Primary Examiner-Laura L. Stockton Apr. 10, 2002 (KR) ................................ 10-2002-0019524 (74) Attorney, Agent, or Firm-Scully, Scott, Murphy & (51) Int. Cl." .............................................. C07D 403/04 Presser (52) U.S. Cl. .................................................... 548/313.4 (57) ABSTRACT (58) Field of Search ......................................
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