作者:Albert Defoin、Agn�s Brouillard-Poichet、Jacques Streith
DOI:10.1002/hlca.19920750108
日期:1992.2.5
Chiral acylnitroso dienophiles 14, which were obtained from L-proline and from D-mandelic acid, reacted with cyclohexa-1,3-diene to give the expected diastereoisomers 15 and 16 (Scheme 2 and Table 1). The d.e. values for these Diels-Alder reactions were moderate; they are related to the molecular stiffness of the dienophiles. The absolute configuration of the major cycloadducts was interpreted in terms
由L-脯氨酸和D-扁桃酸获得的手性酰基亚硝基二亲烯体14与环己-1,3-二烯反应,得到预期的非对映异构体15和16(方案2和表1)。这些Diels - Alder反应的de值中等。它们与亲二烯体的分子刚度有关。主要的环加合物的绝对构型是根据HOMO / LUMO相互作用来解释的,方法是“内”,而acylintroso二烯亲和体则从其顺式构象反应。