[reaction: see text]. Allylation of aromatic aldehydes with allyltrichlorosilane is catalyzed by the new terpene-derived pyridine N-oxide (+)-METHOX (< or =5 mol %) in MeCN with high enantioselectivities (< or =96% ee) and conversion rates; this catalyst retains high selectivity even at room temperature.
[反应:请参见文字]。新型萜烯衍生的
吡啶N-氧化物(+)-METHOX(<或= 5 mol%)在MeCN中具有高对映选择性(<或= 96%ee)和转化率催化芳香醛与烯丙基三氯
硅烷的烯丙基化; 该催化剂即使在室温下也保持高选择性。