4 A molecular sieve; [Cu(I)(CH3CN)4]PF6 in acetonitrile T=65 - 70°C; 15 h;

zinc dibromide in benzene T=50°C; Inert atmosphereMolecular sieve; regioselective reaction;

in xylene T=100 - 110°C; 0.5 h; further solvents, reaction times, and temperatures. Structure of products depends on the structure of alcohol (in case of tri- and diphenylmethanol and allylic alcohols products are viz N-substituted sulfonamides).; Product distributionMechanism;

1: 55 percent / sodium hydrogentelluide (NaTeH) / ethanol; diethyl ether / 0.25 h / Ambient temperature 2: tosylation View Scheme

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tosylation;