Chiral 6,7-dihydrooxepin-2(5H)-ones and the azepinone analogues: Conformation and diastereofacial selectivity in addition to the enones
作者:Masayuki Sato、Fumiaki Uehara、Koh-ichi Aizawa、Chikara Kaneko、Shun-ichi Satoh、Toshio Furuya
DOI:10.1016/0040-4039(95)02219-8
日期:1996.1
Diastereofacial selectivity in addition to the enones of 6-and 7-substituted dihydrooxepinones was studied. The addition occurred preferentially from the face anti to the substituent and 7-substituted substrates showed higher diastereofacial selectivity than the 6-substituted substrates. An explanation for the observed diastereofacial selectivity is proposed.
除了6-和7-取代的二氢氧杂环庚烷酮的烯酮外,还研究了非对面选择性。该加成优选从与取代基相反的面发生,并且7-取代的底物显示出比6-取代的底物更高的非对映选择性。提出了对所观察到的非对面选择性的解释。