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研究领域

含氟药物和含氟材料(氟试剂、含氟药物及中间体、含氟液晶材料、含氟聚合材料、含氟电池材料、含氟润滑材料的制备和应用;氟废料回收) 一、以F2为基础的芳香化合物氟化研究 很多农药、医药、材料的分子结构中含有带氟原子、三氟甲基、二氟亚甲基取代基的芳香环,如何方便、安全、价廉地在芳香环上接入氟原子、三氟甲基、二氟亚甲基具有重要的意义。在芳香环上引入氟,工业上主要采用氟化氢、氟化钾等无机盐,但是其应用范围不广。氟气及其下游产品,包括SF4、SiF4、PF5、BrF3、ClF3、IF5、NF3、HOF.CH3CN、Selectfluor、BAST等,也能在芳环上上氟。其中SF4及其衍生物BAST用途最广,能很好地在芳香环上引入氟原子、三氟甲基、二氟亚甲基,这方面国外相关文献报道较多,但是在国内少有研究,特别是应用于工业化生产的实例更少。我在这方面比较有兴趣,并已做了一些前期工作,例如电解制氟,BrF3、IF5、NFSI等的工业化制备,SF4、BAST的实验室合成等。 二、含氟资源的可持续利用与回收 氟化物用途非常广泛,但是氟资源日益减少,工厂产生的含氟废物对环境的污染也很严重,因此含氟资源可持续利用与回收有着非常重要的意义。氟资源的回收主要包括氟离子回收、SF6回收、氟利昂回收、全氟表面活性剂回收、全氟磺酸离子交换膜回收、全氟聚合物回收等。广义的讲,废PP、PE等有机物、聚合物氟化后再利用也属于资源回收的范畴。氟化往往能够增强聚合物的润滑性能、防水防油性能、抗氧化性能、抗老化性能等。通过氟化改性方式对有机物、材料等改性后再利用也是资源可持续发展的一个方面。国外此方面的研究比较多,但是国内这方面做的工作比较少。我与贵州瓮福集团已就此方面开始合作:编织物氟化改性研究。 三、医药或农药中间体的合成工艺改进和工业化研究 除了氟化学研究,医药或农药中间体合成工艺改进,也是我们的研究重点。主要从事工业化研究工作,例如:爵内达龙中间体DIM产业化;1,2,3-三甲氧基苯的产业化;正缬氨酸的产业化等。

近期论文

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Xianjin Yang, Lisi Zhang, Jintao Liu. A straightforward preparation of fluorine-containing 1,2-dihydropyrimidines and pyrimidines with 2,2-dihydropolyfluoroalkylaldehydes. Tetrahedron, 2007, 63, 5643–5648. Xianjin Yang, Wenjiao Yuan, Song Gu, Xueyan Yang, Fanhua Xiao, Quanshen Shen, Fanhong Wu. The Na2S2O4 initiated free radical additions of polyfluoroalkyl halides to 4-pentenamides,Journal of Fluorine Chemistry. 2007, 128, 540–544. Xianjin Yang, Jintao Liu. Study on the syntheses of 3-(1-imino-fluoroalkyl)-1H-quinolin-2-one derivatives,Acta Chimica Sinica, 2007, 65 (15), 1511–1514. Xianjin Yang, Jintao Liu, Synthesis of fluoroalkylated heterocycles via the reaction of 3-(1-hydropo-lyfluoroalkenyl)-1-oxo-2,4,1-benzoxazines with dinucleophilic reagents, Chin. J. Chem., 2006, 24 (10), 1418-1420. Yun Lin, Xianjin Yang, Jintao Liu,One-pot synthesis of 4-trifluoromethyl-1,2-dihydropyrimidines, Chin. J. Chem., 2007,25 (01): 113-115 Xueyan Yang, Zhonghua Wang, Xiang Fang, Xianjin Yang, Fanhong Wu, Yongjia Shen, Synthesis of difluoromethylene-containing 1,2,4-oxadiazole compounds via the reaction of 5-(difluoroiodomethyl)-3-phenyl-1,2,4-oxadiazole with unsaturated compounds initiated by sodium dithionite, Synthesis, 2007, June , 1768-1778. Xueyan Yang, Zhonghua Wang, Yaoping Zhu, Xiang Fang, Xianjin Yang, Fanhong Wu, Yongjia Shen, Fluoroalkylation of pent-4-en-1-ols initiated by sodium dithionite to synthesize fluorine-containing tetrahydrofuran derivatives, Journal of Fluorine Chemistry. 2007, 128, 1046-1051. Xiang Fang, Xueyan Yang, Xianjin Yang, Shenjie Mao, Zhonghua Wang, Guorong Chen and Fanhong Wu. AIBN-initiated radical addition of gem-difluorinated alkyl iodides to alkynes and the Pd-catalyzed Sonogashira coupling reaction of E-phenyl difluoromethylene vinylic iodides with terminal alkynes, Tetrahedron, 2007, 63, 10684-10692. Fanhong Wu, Fanhua Xiao, Xianjin Yang, Yongjia Shen, Tieying Pan, Sodium dithion-ite initiated regio- and stereoselective radical addition of polyfluoroalkyl iodide with norbo-rnene analogs. Tetrahedron, 2006, 62, 10091-10099. Xueyan Yang, Yaoping Zhu, Xiang Fang, Xianjin Yang, Fanhong Wu, Yongjia Shen. Synthesis of γ-butyrolactones containing α,α-difluoromethylenyl bisphosphonate initiated by Na2S2O4, Journal of Fluorine Chemistry, 2007, 128, 174-178. Xiang Fang, Xueyan Yang, Xianjin Yang, Min Zhao, Guorong Chen, Fanhong Wu. Palladium-catalyzed arylation of α,α-difluoro-allylic-β-hydroxyester. Tetrahedron Lett., 2006, 47 (47), 8231-8234. Xianjin Yang, Jintao Liu, Fulu Zhao, “Reactions of 2,2-dihydropolyf-luoroalkylaldehydes with amines: A facile synthetic method for fluoroal-kylenaminoketones”, Journal of Fluorine Chemistry, 2004, 125, 415-419. Xianjin Yang, Jintao Liu, Hejun Lu, “The reaction of 2-[1-hydropoly-fluoro-1-alke-nyl]-4H-3,1-benzoxin-4-ones with dinucleophilic reagents: A convenient route to fluoroalkylated nitrogen-containing tricyclic compounds”, Tetrahedron, 2004, 60, 2897-2902. Xianjin Yang, Jintao Liu, “Unexpected reaction of 2,2-dihydropolyfluoroaldehydes with ammonia and aldehydes or ketones: A novel synthe-tic method for 4-fluoroalkyl-1,2-dihydropyrimidine”,Tetrahedron Lett., 2004, 45, 5305-5307. Fulu Zhao, Xianjin Yang, Jintao Liu, “The reaction of 2-fluoroalkyl-1-iodo-ethylenes with arylamines: a facile method for the synthesis of fluoroalkylated quinolines and enaminoketones”, Tetrahedron, 2004, 60, 9945-9951. 杨先金,袁文娇,吴范宏,奥氮平的合成工艺改进,中国新药杂志,2007,16(22),1891。 杨先金,陈美平,袁文姣,刘金涛,氟烷基碘与乙烯基乙醚和胺一锅法反应合成氟烷基烯胺酮,华东理工大学学报(自然科学版),32 (12),2006,73-77。 杨发福,杨先金,余天祥*,“双硫脲杯[4]与一些阴离子的配位作用”,有机化学,Vol. 22,No. 22,2002,1040-1043。 杨先金,余天祥*,“一些对叔丁基杯[4]二酰胺衍生物的合成及其对一些阳离子的配合作用”,武汉大学学报(自然科学版),Vol. 47,No. 4,2001,393-395。 杨先金,余天祥*,杨发福,何永炳,“杯[4]双硫脲衍生物的合成及其对H2PO4-的配位作用“,武汉大学学报(自然科学版),Vol. 45,No. 6,1999,811-813。

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