Indium(III)-Catalyzed Cyclization of Aromatic 5-Enynamides: Facile Synthesis of 2-Aminonaphthalenes, 2-Amino-1 H-indenes, and 2,3-Dihydro-1 H-indeno[2,1- b]pyridines.

Autor:	Yeh, Ming ‐ Chang P., Liang, Chia ‐ Jung, Chen, Hsiao ‐ Feng, Weng, Yu ‐ Ting
Předmět:	RING formation (Chemistry) AMIDE synthesis INDIUM INDENE synthesis PYRIDINE synthesis BROMINE
Zdroj:	Advanced Synthesis & Catalysis; Oct2015, Vol. 357 Issue 14/15, p3242-3254, 13p
Abstrakt:	Indium(III)-catalyzed cyclization reactions of aromatic 5-enynamides were studied. Indium triflate enabled the efficient synthesis of 2-aminonaphthalenes and 2-amino-1 H-indenes from aromatic N-methyl- N-tosyl-ynamides bearing an ortho-vinyl and -isobutenyl group, respectively. The aromatic N-3-arylpropargylynamides bearing an ortho-gem-dihalovinyl subunit underwent a tandem cyclization/carbobromination reaction in the presence of indium tribromide to provide the dibrominated 2,3-dihydro-1 H-indeno[2,1- b]pyridine derivatives in good yields. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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