Reactions of Amino Alcohols in Superacid: The Direct Observation of Dicationic Intermediates and Their Application in Synthesis
作者:Douglas A. Klumpp、Sharon L. Aguirre、Gregorio V. Sanchez、Sarah J. de Leon
DOI:10.1021/ol016408y
日期:2001.8.1
[reaction: see text]. The chemistry of amino alcohols has been studied in superacidic media, and these compounds have been found to ionize cleanly to the dication intermediates. Several dicationic species have been directly observed by low-temperature 13C NMR, including those from epinephrine (adrenaline) and synephrine. Amino alcohols react (70-99% yields) with C6H6 in triflic acid (CF3SO3H) by electrophilic
[反应:请参见文字]。氨基醇的化学性质已在超酸性介质中进行了研究,发现这些化合物可清洁地离子化成指示剂中间体。通过低温13 C NMR直接观察到了几种药物,包括肾上腺素(肾上腺素)和肾上腺素的药物。氨基醇通过亲电子芳族取代与三氟甲磺酸(CF3SO3H)中的C6H6反应(产率70-99%)。