(±)-<i>trans</i>,<i>cis</i>-4-Hydroxy-5,6-di-<i>O</i>-isopropylidenecyclohex-2-ene-1-one: Synthesis and Facile Dimerization to Decahydrodibenzofurans
作者:Victoria L. Paddock、Robert J. Phipps、Almudena Conde-Angulo、Araceli Blanco-Martin、Carles Giró-Mañas、Laetitia J. Martin、Andrew J. P. White、Alan C. Spivey
DOI:10.1021/jo102314w
日期:2011.3.4
acetonide-protected meso-1,2-dihydrocatechol derivative 1 via photooxygenation, then Kornblum−DeLaMare rearrangement. The product is unstable unless its 4-hydroxy group is protected, as it undergoes facile dimerization in solution to a 1:1 mixture of diastereoisomeric decahydrodibenzofurans 8 and 9. A new synthesis of the dihydrocatechol 1 from 1,3-cyclohexadiene has also been developed.
从乙炔化物保护的内消旋-1,2-二氢邻苯二酚开发了一种有效合成(±)-反式,顺式-4-羟基-5,6-二-O-异亚丙基亚环己基-2-烯-1-酮(3)的方法。衍生物1通过光氧合,然后进行Kornblum-DeLaMare重排。该产品是不稳定的,除非它的4-羟基基团被保护,因为它经历了在溶液中的1容易二聚化:非对映异构decahydrodibenzofurans的1:1混合物8和9。也已经开发了由1,3-环己二烯合成二氢邻苯二酚1的新方法。