Stereoisomerization of α-hydroxy-β-sulfenyl-α,β-dimethyl naphthoquinones controlled by nonbonded sulfur–oxygen interactions
作者:Antonio Latorre、Santiago Rodríguez、Amit Jain、Florenci V. González、José A. Mata
DOI:10.1016/j.tet.2013.01.033
日期:2013.3
The anti α-hydroxy-β-sulfenyl-α,β-dimethyl naphthoquinones isomerize in basic media into syn/anti mixtures of isomers, giving the syn isomer as the major product. Conversely, anti α-hydroxy-β-alkoxy-α,β-dimethyl naphthoquinones isomerize to furnish the anti isomer as the major product. The crystal structure of syn α-hydroxy-β-phenylsulfenyl-α,β-dimethyl naphthoquinone has been determined. The X-ray
抗α-羟基-β-亚磺酰基-α,β-二甲基萘醌在碱性介质中异构化为异构体的顺式/反式混合物,以顺式异构体为主要产物。相反,反α-羟基-β-烷氧基-α,β-二甲基萘醌异构化以提供反异构体作为主要产物。已经确定了合成α-羟基-β-苯基亚磺酰基-α,β-二甲基萘醌的晶体结构。X射线和实验工作表明,二价硫与羟基氧的有吸引力的1,4分子内相互作用是上述立体化学偏好的驱动力。