Nickel-Catalyzed Oxidative Cyclotrimerization of α-Amino Ketones: Selective Synthesis of Pyrazoles
作者:Jian-Nan Xiang、Jin-Heng Li、Ri-Yuan Tang、Xiao-Kang Guo、Ming Hu、Zhi-Qiang Wang
DOI:10.1055/s-0033-1340014
日期:——
A new strategy for the synthesis of 3-methylene-2,3-dihydro-1 H -pyrazoles is presented by Ni-catalyzed oxidative cyclotrimerization of α-aminoketones. This unprecedented method allows three α-aminoketones to undergo sequential multiple deprotonations and deamination through two C–C bonds and one N–N bond formation cascade.
Rh‐Catalyzed Chemodivergent [3+3] Annulations of Diazoenals and α‐Aminoketones: Direct Synthesis of Functionalized 1,2‐Dihydropyridines and Fused 1,4‐Oxazines
作者:Pratap Kumar Mandal、Sreenivas Katukojvala
DOI:10.1002/chem.202303862
日期:2024.4.2
Chemodivergent [3+3] annulations: The reactivity of Rh-enalcarbenoid has been switched from carbenoid to vinylogous NH-insertion by altering acyclic to cyclic α-amino ketones to deliver functionalized 1,2-dihydropyridines (1,2-DHPs) and fused 1,4-oxazines respectively. The structural diversification of 1,2-DHP and fused 1,4-oxazines gave valuable piperidines, pyrido[1,2-a]indole, 2-pyridone, hexahydroquinolin-2(1H)-ones
A Mild, Selective Copper-Catalyzed Oxidative Phosphonation of α-Amino Ketones
作者:Bin Yang、Ting-Ting Yang、Xi-An Li、Jun-Jiao Wang、Shang-Dong Yang
DOI:10.1021/ol402355a
日期:2013.10.4
A novel and selective method of simple copper-salt catalyzed phosphonation of alpha-amino carbonyl compounds to afford imidoylphosphonates is reported. This reaction system has a broad reaction scope. The convenient and environmentally benign process makes this protocol very attractive.
Prakash, Om; Ranjana; Saini, Neena, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1994, vol. 33, # 2, p. 116 - 119
作者:Prakash, Om、Ranjana、Saini, Neena、Goyal, Seema、Tomar, Rajesh K.、Singh, Shiv P.