反应详情

Compound 21K was prepared following the procedure as described for the synthesis of compound 21A (see Scheme 3) using 3-phenyl-allyldisulfanyl-3-allylbenzene as the disulfide (Tetrahedron Letters, 42, 2001, 6741-6743) and 3-(4-bromo-1H-pyrazol-3-yl)-pyridine (compound 20A). (conditions flash chromatography (ethyl acetate)). Yield: 22%. (oil), (TLC ethyl acetate Rf 0.45).