reaction was investigated with this complex. [(IMesMe)(PPh3)PdI2] catalyzes the allylation of aromatic (except 4-nitrobenzaldehyde) and aliphatic aldehydes (including enolizable aldehydes) with cinnamyl acetate to give the corresponding homoallylic alcohols in 57–98 % yields and diastereoselectivities ranging from 70:30 to 92:8. The allylation of acetone also takes place under the same conditions, leading
[(NHC)(PR3)PdX2] 配合物(NHC = N-杂环卡宾)是
钯催化的羰基化合物与
乙酸烯丙酯和
二乙基锌烯丙基化反应的活性预催化剂。用
乙酸烯丙酯和
乙酸肉桂酯进行了一项比较研究,检查了一系列六种这些配合物的催化活性。[(IMesMe)(PPh3)PdI2] 被发现是最通用的预催化剂(IMesMe = 1-mesityl-3-methylimidazol-2-ylidene),并用该配合物研究了反应范围。[(IMesMe)(PPh3)PdI2] 催化芳香族(4-硝基
苯甲醛除外)和脂肪族醛(包括可烯醇化醛)与
乙酸肉桂酯的烯丙基化,以 57-98% 的产率和 70:30 的非对映选择性得到相应的高
烯丙醇到 92:8。
丙酮的烯丙基化也在相同条件下发生,导致预期的加合物产率为 63%。与
乙酸环己烯酯的反应在室温下进行,以 40-78% 的产率得到高
烯丙醇,具有优异的非对映选择性 (>98:2),