1: benzophenone O-pentafluorobenzoyloxime With bis(η3-allyl-μ-chloropalladium(II)); tris-(o-tolyl)phosphine in n-butyronitrile Inert atmosphereMolecular sieve; 2: 2-trimethylsilyloxyphenyl triflate With cesium fluoride in n-butyronitrile T=120°C; Molecular sieve;

air; copper diacetate in N,N-dimethyl-formamide T=50°C; 2 h;