2,4,6,8-Tetraazabarbaralanes: Models for tetraazasemibullvalenes |
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| Institution: | 1. Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China;2. National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330027, PR China;1. State Key Laboratory of Environment-Friendly Energy Material, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, PR China;2. Xi''an Modern Chemistry Research Institute, Xi''an 710069, PR China;1. State Key Laboratory Breeding Base of Coal Science and Technology, co-founded by Shanxi Province and the Ministry of Science and Technology, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China;2. School of Chemical Engineering, China University of Mining & Technology, Xuzhou 221116, Jiangsu, China |
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| Abstract: | 3,7-Diethoxy-1,5-dimethyl-2,4,6,8-tetraaza-bicyclo3.3.1]nona-2,6-diene (7), readily obtained from the corresponding urea derivative, can be oxidized to afford 3,7-diethoxy-1,5- dimethyl-2,4,6,8-tetraazabarbaralane (9) whose crystal structure corresponds to a localized molecule. On heating, 9 gives rise to 2-ethoxy-4,6-dimethyl-pyrimidine. |
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