Synthesis of spiro[4.5]trienones by intramolecular ipso-halocyclization of 4-(p-methoxyaryl)-1-alkynes.
作者： Xiaoxia Zhang , Richard C. Larock
DOI: 10.1021/JA053079M
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摘要: A wide variety of 3-halospiro[4.5]trienones are readily prepared in good to excellent yields by the intramolecular ipso-halocyclization 4-(p-methoxyaryl)-1-alkynes under mild reaction conditions. ICl, I2, and Br2 all effective electrophiles for this process carefully optimized
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