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| The traditional synthesis of benzoxazole method is based on the o-aminophenol with carboxylic acid chloride, esters and aldehydes, such as reaction, the catalyst used in most of the complexes of precious metals such as Pd, Au or Ag. At present, the benzo-o-aminophenol and nitrile as a raw material to build the benzoxazole derivatives uncommon reported in the literature, this article uses cheap trifluoromethyl sulfonic acid copper as a catalyst, one step starting from o-aminophenol and Nitrile constructed oxazole derivatives, mild reaction conditions, is not sensitive to the air without inert gas protection. The method is suitable for a wide range of both aromatic nitriles or fat nitrile can be smoothly reaction. |
2Â¥2012-04-10 13:02:33
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3Â¥2012-04-10 13:42:35
wzcrazy
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| The traditional synthesis of benzoxazole method is based on the reaction of ortho-aminophenol with carboxylic acid,acyl , ester and aldehyde , the kind of catalyst used are mostly precious metal complex Pd, Au or Ag of etc.At present, there is little detailed information about structuring benzoxazole derivatives with ortho-aminophenol and nitrile as raw material,use cheaper material like trifluoromethyl sulfonic acid copper as catalyst adop one-step method to structure benzoxazole derivatives with ortho-aminophenol and nitrile£¬the reaction condition is mild,not sensitive to the air ,and no needto protecede by inert gas.The method is suitable for a wide range ,no matter aromatic nitriles or fat nitrile can be smoothly reaction. |
4Â¥2012-04-10 14:36:22
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| The traditional method of the synthesis of benzoxazole is based on the reaction of ortho-aminophenol with carboxylic acid,acyl , ester and aldehyde , the catalyst used in above reactions mostly is precious metal complex like Pd, Au or Ag etc.At present, there is little detailed information about structuring benzoxazole derivatives with ortho-aminophenol and nitrile as raw material.In this article,we used cheap material like trifluoromethyl sulfonic acid copper as catalyst,and construced benzoxazole derivatives by one step with ortho-aminophenol and nitrile to start £¬the reaction condition is mild,not sensitive to the air ,and no need to protecected by inert gas.The method is suitable for a wide range ,no matter aromatic nitriles or fatty nitrile can be smoothly reaction.¶Ô·ÒëÓÐÐËȤ²Å·ÒëµÄ£¬½èÖúÁ˴ʵ䣬רҵÃû´Ê·Òë¿ÉÄܲ»ÊǺÜרҵ£¬Äã²Î¿¼Ò»Ï°ɣ¬ºÙºÙ |

5Â¥2012-04-11 22:51:16














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