Synthesis of carbazoles by dehydro Diels–Alder reactions of ynamides
摘要:
A new approach to carbazoles and benzannulated carbazoles by means of intramolecular dehydro Diels–Alder of ynamides is reported. N-( o-Ethynyl)aryl ynamides and N-( o-ethynyl) arylynamides were prepared in a few steps starting from o-iodoaniline. Thermal cycloaddition of N-( o-ethynyl)aryl ynamides and N-( o-ethynyl) arylynamides affords carbazoles and benzannulated and heteroannulated carbazoles in moderate-to-good yields.
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DOI:
10.1016/j.tet.2008.02.029
被引量:
年份:
2008
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