Facile synthesis of 1,2,3-tricarbonyls from 1,3-dicarbonyls mediated by cerium(IV) ammonium nitrate
作者:Akhil Sivan、Ani Deepthi
DOI:10.1016/j.tetlet.2014.01.145
日期:2014.3
A mild and efficient protocol for the synthesis of vicinal tricarbonyl compounds from β-dicarbonyls in a single step using cerium(IV) ammoniumnitrate as a catalytic oxidant is described. Ease of execution, wide substrate scope and the suitability for the synthesis of commercially important compounds like ninhydrin, alloxan and oxoline make this reaction particularly noteworthy.
I<sub>2</sub>-Catalyzed Direct α-Hydroxylation of β-Dicarbonyl Compounds with Atmospheric Oxygen under Photoirradiation
作者:Chun-Bao Miao、Yan-Hong Wang、Meng-Lei Xing、Xin-Wei Lu、Xiao-Qiang Sun、Hai-Tao Yang
DOI:10.1021/jo401866p
日期:2013.11.15
An I2-catalyzed hydroxylation of β-dicarbonyl moieties using air as the oxidant under photoirradiation has been developed for the easy preparation of α-hydroxy-β-dicarbonyl compounds. The transformation was completed with only 1 mol % of I2. With α-unsubstituted malonates, the hydroxylated dimerization product was afforded as the predominant product along with a minor product, α,α-dihydroxyl malonate
Synthesis of Structurally Diverse 3-, 4-, 5-, and 6-Membered Heterocycles from Diisopropyl Iminomalonates and Soft<i>C</i>-Nucleophiles
作者:Padmanabha V. Kattamuri、Urmibhusan Bhakta、Surached Siriwongsup、Doo-Hyun Kwon、Lawrence B. Alemany、Muhammed Yousufuddin、Daniel H. Ess、László Kürti
DOI:10.1021/acs.joc.9b00681
日期:2019.6.7
heterocyclic unnatural amino acid derivatives by exploiting facile Mannich-type reactions between readily available N-alkyl- and N-aryl-substituted diisopropyl iminomalonates and a wide range of soft anionic C-nucleophiles without using any catalyst or additive. Fully substituted aziridines were obtained in a single step when enolates of α-bromo esters were employed as nucleophiles. Enantiomerically enriched
[EN] PREPARATION OF SECONDARY AMINES WITH ELECTROPHILIC N-LINCHPIN REAGENTS<br/>[FR] PRÉPARATION D'AMINES SECONDAIRES AVEC DES RÉACTIFS ÉLECTROPHILES DE N-LINCHPINE
申请人:UNIV RICE WILLIAM M
公开号:WO2018213572A9
公开(公告)日:2018-12-13
Kotschergin P. M., Titkowa R. M., Zh. organ. khimii, 30 (1994) N 7, S 986-988