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To a solution of diisopropylamine (4.82 g, 25.0 mmol) in anhydrous THF (35 mL) was consecutively added a solution of 1.60 M nBuLi in hexane (15.6 mL, 25.0 mmol) and 7(2.53 g, 25.0 mmol) under Ar atmosphere at -78¡æ.After stirring for 2 h at -78¡æ, CO2 gas (0.02 MPa) was bubbled into the reaction mixture for 30 min under cooling at -78¡æ. After evaporation of the solvent, the residue was dissolved in water (50 mL), and the solution was washed with Et2O (20 mL¡¤ 3). The aqueous layer was acidified with concd HCl to pH 1 and extracted with CH2Cl2 (20 mL¡¤ 3). The combined extracts were dried over anhydrous MgSO4 and concentrated in vacuo. ÎÒÏÖÔڸ㲻Ã÷°×µÄÊǰѶþÒì±û°·µÄËÄÇâß»à«ÈÜÒºµÎ¼Óµ½¶¡»ùï®Ó뻯ºÏÎï7µÄ»ìºÏÈÜÒºÖл¹ÊÇÏȵμӵ½¶¡»ùï®ÖÐ ¶øºóÔÚ°ÑÕâ¸öÈÜÒºµÎ¼Óµ½»¯ºÏÎï7ÖÐ ![]() |
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- ×¢²á: 2011-03-04
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2Â¥2011-12-13 14:03:34
alvarohao
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- ×¢²á: 2011-09-15
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°®ÓëÓêÏÂ(½ð±Ò+2): 2011-12-13 15:06:42
cch_cxy(½ð±Ò+20): лл 2011-12-14 20:37:17
°®ÓëÓêÏÂ(½ð±Ò+2): 2011-12-13 15:06:42
cch_cxy(½ð±Ò+20): лл 2011-12-14 20:37:17
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3Â¥2011-12-13 14:34:00








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