Organolathanide-Catalyzed Regioselective Intermolecular Hydroamination of Alkenes, Alkynes, Vinylarenes, Di- and Trivinylarenes, and Methylenecyclopropanes. Scope and Mechanistic Comparison to Intramolecular Cyclohydroaminations
作者:Jae-Sang Ryu、George Yanwu Li、Tobin J. Marks
DOI:10.1021/ja035867m
日期:2003.10.1
methylenecyclopropane proceeds via highly regioselective exo-methylene C=C insertion into Ln-N bonds, followed by regioselective cyclopropane ring opening to afford the corresponding imine. For the Me(2)SiCp' '(2)Nd-catalyzed reaction of Me(3)SiCtbd1;CMe and H(2)NCH(2)CH(2)CH(2)CH(3), DeltaH() = 17.2 (1.1) kcal mol(-)(1) and DeltaS() = -25.9 (9.7) eu, while the reaction kinetics are zero-order in [amine]
Cp'(2)LnCH(SiMe(3))(2) (Cp' = eta(5)-Me(5)C(5); Ln = La, Nd, Sm, Lu) 和 Me 类型的有机镧系元素配合物(2)SiCp' '(2)LnCH(SiMe(3))(2) (Cp' ' = eta(5)-Me(4)C(5); Ln = Nd, Sm, Lu) 作为有效的预催化剂用于炔烃 R'Ctbd1;CMe (R' = SiMe(3), C(6)H(5), Me) 的区域选择性分子间加氢胺化,烯烃 RCH=CH(2) (R = SiMe(3), CH( 3)CH(2)CH(2)), 丁二烯, 乙烯基芳烃 ArCH=CH(2) (Ar = 苯基, 4-甲基苯, 萘基, 4-氟苯, 4-(三氟甲基)苯, 4-甲氧基苯, 4-(二甲氨基)苯、4-(甲硫基)苯)、二-和三乙烯基芳烃,以及具有伯胺R''NH(2)的亚甲基环丙烷(R''=正