Reduction of Selenoamides to Amines Using SmI<sub>2</sub>–H<sub>2</sub>O
作者:Samuel Thurow、Eder J. Lenardão、Xavier Just-Baringo、David J. Procter
DOI:10.1021/acs.orglett.6b03325
日期:2017.1.6
Selenoamides are selectively reduced to amines by SmI2 with H2O. The process is general for primary, secondary, and tertiary aryl and alkyl selenoamide substrates and selectively delivers amine products. The reduction proceeds under mild conditions using SmI2 activated by straightforward addition of H2O, and does not require an additional Lewis base additive.
Alkylation of cyclic amines with alcohols catalyzed by Ru(II) complexes bearing N -Heterocyclic carbenes
作者:Öznur Doğan Ulu、Nevin Gürbüz、İsmail Özdemir
DOI:10.1016/j.tet.2017.09.027
日期:2018.2
includes the synthesis of 2-(1,3-dioxane-2-yl)ethyl substituted benzimidazole substituted N-heterocyclic carbenes precursors and their ruthenium complexes. Synthesized compounds were characterized by elemental analysis and NMR spectroscopy. All complexes have been tested in the alkylation of pyrrolidine and morpholine with alcohols, showing an excellent activity in this reaction.
Expedient Reductive Amination of Aldehyde Bisulfite Adducts
作者:Neelakandha Mani、Chennagiri Pandit
DOI:10.1055/s-0029-1217050
日期:2009.12
protocol for the direct reductive amination of aldehydebisulfite adducts is reported. Bisulfite adducts of aliphatic and aromatic aldehydes, on treatment with an organic base under non-aqueous conditions liberate the aldehyde in situ, which then undergoes efficient reductive amination with amines in the presence of sodium triacetoxyborohydride. Bisulfite adducts - reductive amination - sodium triacetoxyborohydride
ESI-MS spectral methods. Further, structures of two of the complexes have been determined by single crystal X-ray diffraction technique which revealed a pseudo octahedral geometry with the coordination of the quinoline nitrogen and quinoline oxygen atoms of the ligand. All the newcomplexes have been employed as efficient catalysts in N-alkylation reactions for the synthesis of tertiary amines by the coupling
一系列新的通式为[RuH(CO)(EPh 3)2 L](1-6)的8-羟基喹啉-2-羧醛的Ru(II)配合物(E = P或As,L = N '-(((8-羟基喹啉-2-基)亚甲基)噻吩-2-碳酰肼(HQ-THy),N'-(((8-羟基喹啉-2-基)亚甲基)异烟酰肼(HQ-IHy),N'-已经合成了((8-羟基喹啉-2-基)亚甲基)苯甲酰肼(HQ-BHy)。它们已通过元素分析,IR,NMR(1 H,13 C和31P)和ESI-MS光谱方法。此外,已经通过单晶X射线衍射技术确定了两种配合物的结构,该技术揭示了配体的喹啉氮和喹啉氧原子配位的伪八面体几何形状。通过将仲胺与芳族伯醇在低催化剂负载下以最大收率偶联,所有新的络合物已被用作N-烷基化反应中合成叔胺的有效催化剂。另外,已经充分研究了取代基对配体,不同溶剂以及碱和催化剂负载量对配合物催化活性的影响。综合大楼1业已发现,AlO3是醇与胺的N-烷
Regioselective Borylation of the C–H Bonds in Alkylamines and Alkyl Ethers. Observation and Origin of High Reactivity of Primary C–H Bonds Beta to Nitrogen and Oxygen
作者:Qian Li、Carl W. Liskey、John F. Hartwig
DOI:10.1021/ja503676d
日期:2014.6.18
Borylation of aliphatic C-H bonds in alkylamines and alkyl ethers to form primary aminoalkyl and alkoxyalkyl boronate esters and studies on the origin of the regioselectivity of these reactions are reported. The products of these reactions can be used directly in Suzuki-Miyaura cross-coupling reactions or isolated as air-stable potassium trifluoroborate salts. Selective borylation of the terminal C-H