Rearrangement of organometallic compounds. 24. Carbon skeletal [1,2] anionic rearrangements of tertiary benzylic amines: geometric and electronic requirements for generating the spiroazacyclopropane intermediate
Cross-Coupling of Nonactivated Primary and Secondary Alkyl Halides with Aryl Grignard Reagents Catalyzed by Chiral Iron Pincer Complexes
作者:Xile Hu、Gerald Bauer、Chi Cheung
DOI:10.1055/s-0034-1380136
日期:——
Abstract Iron(III) bisoxazolinylphenylamido (bopa) pincer complexes are efficient precatalysts for the cross-coupling of nonactivated primary and secondary alkyl halides with phenyl Grignardreagents. The reactions proceed at room temperature in moderate to excellent yields. A variety of functional groups can be tolerated. The enantioselectivity of the coupling of secondary alkyl halides is low. Iron(III)
Potassium carbonate as a base for the N-alkylation of indole and pyrrole in ionic liquids
作者:Yogesh R. Jorapur、Jae Min Jeong、Dae Yoon Chi
DOI:10.1016/j.tetlet.2006.01.129
日期:2006.4
for the N-alkylation of indole and pyrrole using potassium carbonate in 1-n-butyl-3-methylimidazolium tetrafluoroborate [bmim][BF4] as the sustainable reaction media with acetonitrile as the cosolvent is described herein. Our approach provides good yields with alkyl halides as well as sulfonates as the electrophiles. Cesium carbonate was also found to be a consistent base in the N-alkylation. The proposed
Suzuki-Miyaura Cross-Coupling Reactions of Unactivated Alkyl Halides Catalyzed by a Nickel Pincer Complex
作者:Xile Hu、Thomas Di Franco、Nicolas Boutin
DOI:10.1055/s-0033-1338544
日期:——
Abstract A nickel(II) pincer complex, [(MeN2N)Ni-Cl], was used to catalyze alkyl–alkyl and alkyl–aryl Suzuki–Miyaura coupling reactions of unactivated alkylhalides. The coupling of 9-alkyl-9-borabicyclo[3.3.1]nonane and 9-phenyl-9-borabicyclo[3.3.1]nonane reagents with alkylhalides was achieved in modest to good yields. The reactions tolerated a variety of useful functional groups including ester
摘要 镍(II)钳形络合物[(Me N 2 N)Ni-Cl]用于催化未活化烷基卤化物的烷基-烷基和烷基-芳基的Suzuki-Miyaura偶联反应。9-烷基-9-硼环[3.3.1]壬烷和9-苯基-9-环环[3.3.1]壬烷试剂与卤代烷的偶联以中等至良好的收率实现。该反应可耐受各种有用的官能团,包括酯,醚,呋喃,硫醚,乙缩醛和Boc基团。 镍(II)钳形络合物[(Me N 2 N)Ni-Cl]用于催化未活化烷基卤化物的烷基-烷基和烷基-芳基的Suzuki-Miyaura偶联反应。9-烷基-9-硼环[3.3.1]壬烷和9-苯基-9-环环[3.3.1]壬烷试剂与卤代烷的偶联以中等至良好的收率实现。该反应可耐受各种有用的官能团,包括酯,醚,呋喃,硫醚,乙缩醛和Boc基团。
Merging Photoinduced Iron-Catalyzed Decarboxylation with Copper Catalysis for C–N and C–C Couplings
作者:Ni Xiong、Yang Li、Rong Zeng
DOI:10.1021/acscatal.2c05293
日期:2023.2.3
dual-catalytic strategy for the radical decarboxylation functionalization of aliphatic carboxylic acids. The photoinduced ligand-to-iron charge transfer process under light was initially occurred to generate an unstabilized alkyl radical, and the copper catalyst delivered the radical and enabled the subsequent coupling reactions to form C–N or C–C bonds. By merging iron-catalyzed decarboxylation with copper catalysis