syn-Benzene dioxides: chemoenzymatic synthesis from 2,3-cis-dihydrodiol derivatives of monosubstituted benzenes and their application in the synthesis of regioisomeric 1,2- and 3,4-cis-dihydrodiols and 1,4-dioxocins
作者:Derek R. Boyd、Narain D. Sharma、Nuria M. Llamas、Colin R. O'Dowd、Christopher C. R. Allen
DOI:10.1039/b704584k
日期:——
corresponding 1,4-dioxocins. The syn-benzene dioxide-1,4-dioxocin valence tautomeric equilibrium ratio was found to be dependent on the substituent position. The methodology has also been applied to the synthesis of both enantiomers of the 1,2-(ipso)- and 3,4-cis-dihydrodiols of toluene. This chemoenzymatic approach thus makes available, for the first time, all three possible cis-dihydrodiol regioisomers of
单取代卤代苯和甲苯的顺式-2,3-二氢二醇代谢物已被用作相应的3,4-顺式二氢二醇的合成前体。对映体纯的二氧化苯中间体被还原为3,4-顺式二氢二醇,并通过相应的1,4-二恶英进行热消旋。发现合成的二氧化苯-1,4-二氧杂环丁烷价互变异构平衡比取决于取代基的位置。该方法也已经应用于甲苯的1,2-(异丙基)-和3,4-顺式-二氢二醇的两种对映异构体的合成。因此,这种化学酶学方法首次使单取代苯的所有三种可能的顺式-二氢二醇区域异构体成为可能。