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´ó¼ÒºÃ,ÎÒ×î½üºÏ³ÉÒ»¸ö»¯ºÏÎï,Åöµ½ÁËÎÊÌâ,Çë½Ì´ó¼Ò,·Ç³£¸Ðл! ÎÄÏ׵ķ½·¨ÊÇ: Inorg. Chem. 2003, 42, 2977-2982 Synthesis of L3. Diisoproylamine (3.8 mL, 27 mmol) and n-BuLi (11.4 mL, 2.5 M in hexane) were dissolved in a 60 mL of THF in a Schlenk flask at -78 ¡ãC. After the solution was stirred for 30 min at -78 ¡ãC, 2-picoline (2.5 mL, 25 mmol) was added to the solution. The solution was allowed to warm to room temperature and stirred for 30 min. To the solution was added p-tolualdehyde (1.0 mL, 8.4 mmol). The resulting solution was stirred overnight and quenched with water (100 mL). After the reaction mixture was washed with saturated NaHCO3 (100 mL), CH2Cl2 (100 mL) was added to extract the dipyridyl compound. The CH2Cl2 layer was dried over anhydrous MgSO4, concentrated, and chromatographed on a silica gel column eluting with hexane and diethyl ether (v/v, 1:1). Removal of the solvent gave the product in 36% yield A similar reaction involving formyl acetate afforded a tripodal ligand of L2 ÎÒµÄÄ¿±êÊǺϳÉL2. Ê×ÏÈÎÒµÚÒ»²½ÓÃDiisoproylamineºÍn-BuLi ºÏ³ÉLDAʱ,Åöµ½Á˸öÎÊÌâ, Îҷdz£×¢ÒâÎÞË®ÎÞÑõÁË,µ«ÊǺϳɳöÀ´µÄÊÇÀ¶ÂÌÉ«µÄTHFÈÜÒº,ºÜÆæ¹Ö. Æä´Î,ÎÒÍêÈ«°´ÕÕÎÄÏ×ÉϵIJÙ×÷,µ«ÊÇûÓÐÒ»µãÄ¿±ê²úÎï,¶øÊǺϳɳöÀ´ÁËÒ»¸öÐµĻ¯ºÏÎï (ÎÒÖØ¸´Á˽á´Î,¶¼ÊÇÕâÑùµÄ½á¹û). ÎÒ¼ì²é²»³öÎÒÊÇÄĸöµØ·½³öÁËÎÊÌâ,ÎҸоõÎÒ×öµÄºÜ×ÐϸÁ˰¡, µ«ÊÇÀϰå˵ÎÄÏײ»¿ÉÄÜ´íÁË, ¶øÇÒÎÄÏ×µÄ˼·ÊÇÕýÈ·µÄ°¡,ÎÒÏëÒ²ÊÇ,µ«Ôõô¾ÍÊÇ×ö²»³öÀ´ÄØ? Çë½ÌÒÔϸ÷λ´óÏÀ, ·Ç³£¸Ðл! |
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2Â¥2008-09-10 23:41:03
qinchangming
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3Â¥2008-09-11 10:43:12
huazj
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4Â¥2008-09-11 10:45:52
near8071
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5Â¥2008-09-18 21:35:38













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