Thermal Claisen rearrangement of aryl allenylmethyl ethers: synthesis of 2-(o-hydroxyaryl)buta-1,3-dienes and 4-methyl-2H-1-benzopyrans
作者:T. Balasubramanian、K. K. Balasubramanian
DOI:10.1039/c39920001760
日期:——
Thermal Claisen rearrangement of aryl allenylmethyl ethers in diethylene glycol afforded 2-(o-hydroxyaryl)buta-1,3-dienes and 4-methyl-2H-1-benzopyrans in good yield.
Cation radical-induced Claisen rearrangement of aryl allenylmethyl ethers
作者:S. Dhanalekshmi、C. S. Venkatachalam、K. K. Balasubramanian
DOI:10.1039/c39940000511
日期:——
Treatment of aryl allenylmethyl ethers with tris(4-bromophenyl)aminium hexachloroantimonate in acetonitrile at room temperature induces a facile cation radical induced Claisen rearrangement to yield 2-(o-hydroxyaryl)buta-1,3-dienes.