期刊
CHEMICAL COMMUNICATIONS
卷 -, 期 38, 页码 4827-4829出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b508424e
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The halogen atom transfer radical cyclization (HATRC) has been evaluated on N-(indolylmethyl) trichloroacetamides under Cu(I) Cl catalysis using nitrogen containing ligands. The ring closure leads to the formation of 3,3-spiro-3H-indoles in moderate to good yields by a 5-exo-mechanism. Derivatives with an N- electron withdrawing substituent also lead to a 5-exo-trig and not to a 6-endo-trig cyclization.
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