Indol-4-ylzinc reagent

Several AT-protecting groups were explored with indol-2-ylzinc reagents and the best results in cross-coupling with iodobenzene were obtained with the 1-Boc-derivative <93H(36)941>. Both 2-iodo and 3-iodo-l-phenylsulfonylindole have been converted directly to zinc reagents with active zinc and then coupled with aryl halides <93TL5955>. 

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