Stereodivergent synthesis of 1,4-bifunctional compounds by regio- and diastereoselective Pd-catalyzed allylic substitution reaction
作者:Naoyoshi Maezaki、Masahiro Yano、Yuki Hirose、Yoshikazu Itoh、Tetsuaki Tanaka
DOI:10.1016/j.tet.2006.08.057
日期:2006.10
Highly stereoselective synthesis of 1,4-bifunctional compounds was accomplished via 1,2-asymmetric induction to α-oxyaldehyde and α-oxyketone followed by regio- and diastereoselective Pd-catalyzed allylic substitution reaction. We found that trifluoroacetate is a suitable leaving group for the allylic substitution reaction. Various nucleophiles containing carbon, nitrogen, and sulfur can be applied
1,4-双官能化合物的高度立体选择性合成是通过1,2-不对称诱导生成α-氧基醛和α-氧基酮,然后进行区域和非对映选择性Pd催化的烯丙基取代反应。我们发现三氟乙酸盐是用于烯丙基取代反应的合适的离去基团。可以将包含碳,氮和硫的各种亲核试剂应用于该方法。通过使用炔丙基醇的立体发散性还原,然后进行烯丙基取代反应,以高立体选择性合成1,4-顺-和1,4-抗-加合物。