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We demonstrated a copper(I)-catalyzed coupling reaction of aryl boronic acids with N,O-acetals and N,N-aminals leading to the synthesis of α-aryl glycines and diarylmethylamines. Under an ambient atmosphere, this catalytic system could be applied to the activation of a C(sp 3 )-O bond of N,O-acetals with an ester and an aryl group, or without a coordinating substituent, as well as to a C(sp...
Several alcohols were smoothly and practically tosylated by two methods A and B. Method A uses the TsCl/Et 3 N (1.5-2.5 equiv) / cat. Me 3 N.HCl (0.1-1.0 equiv) reagent. Compared with the traditional Py-solvent method, the method A has merits of its much higher reaction rate, operational simplicity, economy in the use of the amine, and circumvention of the undesirable side reaction...
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