Oxidant-dependent Cu-catalyzed alkynylation and aminomethylation: C–H versus C–C cleavage in TMEDA
摘要:
Oxidant-dependent Cu-catalyzed alkynylation and aminomethylation reactions have been achieved under facile and mild conditions. TMEDA coupled with various terminal alkynes via C-H bond cleavage in good yields using atmospheric oxygen as an oxidant. Switching from air to TBHP afforded aminomethylation products of terminal alkynes through C-C bond cleavage of TMEDA. The protocol provided a novel strategy to prepare bi/tridentate N-ligand. (C) 2013 Elsevier Ltd. All rights reserved.
multicomponent reaction that generates functionalized 1,4-dicarbonyl motifs via formal hydrocarbonylation of activated alkynes with propargylamines and water under metal-free conditions. This novel synthesis method utilizes propargylamines and water as carbonyl and proton precursors in which propargylamines are activated in situ by alkynes for α-C(sp3)–H activation and C–N bond cleavage. This method
BABAYAN A. T.; CHUXADZHYAN EH. O.; MANASYAN L. A., ZH. ORGAN. XIMII, 1979, 15, HO 5, 942-947
作者:BABAYAN A. T.、 CHUXADZHYAN EH. O.、 MANASYAN L. A.
DOI:——
日期:——
Oxidant-dependent Cu-catalyzed alkynylation and aminomethylation: C–H versus C–C cleavage in TMEDA
作者:Qi Shen、Lei Zhang、Yu-Ren Zhou、Jian-Xin Li
DOI:10.1016/j.tetlet.2013.09.118
日期:2013.12
Oxidant-dependent Cu-catalyzed alkynylation and aminomethylation reactions have been achieved under facile and mild conditions. TMEDA coupled with various terminal alkynes via C-H bond cleavage in good yields using atmospheric oxygen as an oxidant. Switching from air to TBHP afforded aminomethylation products of terminal alkynes through C-C bond cleavage of TMEDA. The protocol provided a novel strategy to prepare bi/tridentate N-ligand. (C) 2013 Elsevier Ltd. All rights reserved.
Asymmetric Synthesis of Allenyl α-Amino Amides by an Isothiourea Catalyzed Enantioselective [2,3]-Sigmatropic Rearrangement
作者:Ling Zhang、Zi-Jing Zhang、Jing-Yu Xiao、Jin Song
DOI:10.1021/acs.orglett.8b02521
日期:2018.9.7
Highly efficient catalytic asymmetric [2,3]-sigmatropicrearrangements of propargyl ammonium salts have been accomplished under mild reaction conditions. In the presence of the chiral isothiourea catalyst, a wide range of allenyl α-amino amide derivatives were obtained in generally good yields (up to 99%) with excellent enantioselectivities (up to 96% ee).