Resolution and absolute configuration of enantiomeric spiro-λ4-sulfane-precursor d diaryl sulfoxides
作者:Dénes Szabó、Szilárd Szendeffy、István Kapovits、Árpád Kucsman、Gyula Argay、Alajos Kálmán、László Párkányi
DOI:10.1016/s0957-4166(97)00244-9
日期:1997.7
resolved to yield the enantiomers in high enantiomeric excess. The molecular structures of sulfoxide (+)-1, (+)-2, and (+)-3 were determined by X-ray diffraction method, and the absolute configuration of the stereogenic sulfur atom was assigned as (R), (S), and (S), respectively. The actual conformations are discussed including effective S…O close contacts and the relative positions of aromatic rings.
螺λ 4 -sulfane(spirosulfurane)的前体2 - [(2-羟甲基苯基) -亚磺酰基] bezoic酸1,8 - [(2-羟甲基苯基)亚硫酰基] -1-萘甲酸2,和2- [8--通过用氯胺-T氧化由相应的硫化物制得羟甲基-1-萘基(亚乙基)亚磺酰基]苯甲酸3。通过使用手性有机碱,可消解外消旋体1-3,得到高对映体过量的对映体。通过X射线衍射法测定亚砜(+)- 1,(+)- 2和(+)- 3的分子结构,并将立体硫原子的绝对构型指定为(R),(S)和(S)。讨论了实际构象,包括有效的S…O紧密接触和芳环的相对位置。还给出了相关的键长,角度和CD光谱。