An Unexpected Thermal [1,3]-[1,3]-paraRearrangement of Chromone-3-ylmethyl Aryl Ethers: Mechanism and Application of the Intercepted [1,3]-Rearranged Intermediates to the Synthesis ofcis-Homopterocarpans
An Unexpected Thermal [1,3]-[1,3]-paraRearrangement of Chromone-3-ylmethyl Aryl Ethers: Mechanism and Application of the Intercepted [1,3]-Rearranged Intermediates to the Synthesis ofcis-Homopterocarpans
Dean, Francis M.; Malki, Malak; O'Keeffe, Luke J., Journal of the Chemical Society. Perkin transactions I, 1993, # 22, p. 2675 - 2680
作者:Dean, Francis M.、Malki, Malak、O'Keeffe, Luke J.
DOI:——
日期:——
An Unexpected Thermal [1,3]-[1,3]-<i>para</i>Rearrangement of Chromone-3-ylmethyl Aryl Ethers: Mechanism and Application of the Intercepted [1,3]-Rearranged Intermediates to the Synthesis of<i>cis</i>-Homopterocarpans
作者:Krishnan Devarajan、Somasundaram Devaraj、Kalpattu K Balasubramanian、Shanmugasundaram Bhagavathy
DOI:10.1246/cl.141162
日期:2015.4.5
Chromone-3-ylmethyl aryl ethers with unsubstituted ortho-positions have been found to undergo a novel domino [1,3]-[1,3]-rearrangement to give 4′-hydroxyhomoisoflavones under thermal conditions while the para-substituted ethers lead to 2′-hydroxyhomoisoflavones involving an O- to C-[1,3]-migration, instead of the expected Claisen rearrangement. A few cis-homopterocarpans have been synthesized using the 2′-hydroxyhomoisoflavones obtained from the thermal [1,3]-rearrangement of chromene-3-ylmethyl aryl ethers.