Studies on Lewis Acid-Mediated Intramolecular Cyclization Reactions of Allene-Ene Systems.
作者:Kunio HIROI、Takashi WATANABE、Akihiro TSUKUI
DOI:10.1248/cpb.48.405
日期:——
Lewis acid-mediated reactions of allene-ene compounds, derived from 3-methylcitronellal or dimethyl malonate, were carried out using various Lewis acids such as ethylaluminum dichloride, diethylaluminum chloride, titanium chloride, zinc chloride etherate, or boron trifluoride etherate, affording unexpectedly intramolecular [2+2]cycloaddition products under some particular reaction conditions without
路易斯酸介导的由3-甲基香茅醛或丙二酸二甲酯衍生的烯丙烯化合物的路易斯酸使用各种路易斯酸(例如二氯化乙基铝,二乙基氯化铝,氯化钛,氯化锌醚化物或三氟化硼醚化物)进行。分子内[2 + 2]环加成产物在某些特定的反应条件下,不会形成任何分子内烯类反应产物。