sulfolane; sodium cyanoborohydride; toluene-4-sulfonic acid; toluene-4-sulfonic acid hydrazide 1.) DMF, 100 deg C, 2.) DMF, 100 deg C, 2 h; Yield given. Multistep reaction;

sodium cyanoborohydride; toluene-4-sulfonic acid in N-methyl-acetamide; (2S)-N-methyl-1-phenylpropan-2-amine hydrate; water

1: C8H6NO4Pol; 1-propenylmagnesium bromide in tetrahydrofuran T=-40 - 0°C; Bartoli-indole synthesis; Inert atmospheresolid phase reaction; 2: With ammonium chloride in tetrahydrofuran; water Bartoli-indole synthesis; solid phase reaction; 3: sodium methylate in tetrahydrofuran; methanol T=25°C; 3 h; solid phase reaction;

lithium hydroxide in methanol T=70°C;