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Squaramide is the organic compound with th … Squaramide is the organic compound with the formula O2C4(NH2)2. Not an amide in the usual sense, it is a derivative of squaric acid wherein two OH centers are replaced by NH2. Squaramides refer to a large class of derivatives wherein some of the H's are replaced by organic substituents. Exploiting their rigid planar structures, these compounds are of interest as hydrogen-bond donors in supramolecular chemistry and organocatalysis. Squaramides exhibit 10-50x greater affinity for halides than do thioureas. Squaramide is prepared by ammonolysis of diesters of squaric acid: O2C4(OEt)2 + 2 NH3 → O2C4(NH2)2 + 2 EtOH N-Substituted squaramides are prepared similarly, using amines in place of ammonia.milarly, using amines in place of ammonia.
, 方酰胺是一种有机化合物，化学式为O2C4(NH2)2，它是方酸的衍生物。由于它具有刚性的平面结构，氨基氢被其它基团的取代产物在超分子化学和有机催化上是研究的热点。它对卤化物的亲和性是硫脲的十至五十倍。 方酰胺可以通过方酸酯的氨解来制备： O2C4(OEt)2 + 2 NH3 → O2C4(NH2)2 + 2 EtOH N-取代的方酰胺可将氨替换为胺来制得。
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| rdfs:comment |
方酰胺是一种有机化合物，化学式为O2C4(NH2)2，它是方酸的衍生物。由于它具有刚性的平面结构，氨基氢被其它基团的取代产物在超分子化学和有机催化上是研究的热点。它对卤化物的亲和性是硫脲的十至五十倍。 方酰胺可以通过方酸酯的氨解来制备： O2C4(OEt)2 + 2 NH3 → O2C4(NH2)2 + 2 EtOH N-取代的方酰胺可将氨替换为胺来制得。
, Squaramide is the organic compound with th … Squaramide is the organic compound with the formula O2C4(NH2)2. Not an amide in the usual sense, it is a derivative of squaric acid wherein two OH centers are replaced by NH2. Squaramides refer to a large class of derivatives wherein some of the H's are replaced by organic substituents. Exploiting their rigid planar structures, these compounds are of interest as hydrogen-bond donors in supramolecular chemistry and organocatalysis. Squaramides exhibit 10-50x greater affinity for halides than do thioureas. Squaramide is prepared by ammonolysis of diesters of squaric acid:y ammonolysis of diesters of squaric acid:
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Squaramide
, 方酰胺
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