Pd/C-Catalyzed Alkylation of Heterocyclic Nucleophiles with Alcohols through the “Borrowing Hydrogen” Process
作者:Anggi Eka Putra、Yohei Oe、Tetsuo Ohta
DOI:10.1002/ejoc.201501030
日期:2015.12
The alkylation of heterocyclic compounds is important for the synthesis of various biologically active compounds. In this paper, we present the development of a Pd/C-catalyzedalkylation of heterocyclic compounds using alcohols as the alkylating agents. This method gives the corresponding alkylated heterocyclic compounds in high yields (up to 99 %). The commercially available catalyst can be recovered
Ruthenium-catalyzed selective synthesis of monoalkylated barbituric acids through “borrowing hydrogen” methodology
作者:Anggi Eka Putra、Yohei Oe、Tetsuo Ohta
DOI:10.1016/j.tetlet.2017.01.070
日期:2017.3
An environmentally benign alkylation of barbituric acids via “borrowing hydrogen” process with ruthenium catalysis has been established. The corresponding 5-(alkyl)barubituric acids were obtained in good to excellent yields with low catalyst loading. Various substrates including aliphatic alcohols were tolerated in the present catalytic system. A novel method for construction of barbituric acid-fused
Iron‐Catalyzed Borrowing Hydrogen
<i>C</i>
‐Alkylation of Oxindoles with Alcohols
作者:Mubarak B. Dambatta、Kurt Polidano、Alexander D. Northey、Jonathan M. J. Williams、Louis C. Morrill
DOI:10.1002/cssc.201900799
日期:——
general and efficient iron‐catalyzed C‐alkylation of oxindoles has been developed. This borrowing hydrogen approach employing a (cyclopentadienone)iron carbonyl complex (2 mol %) exhibited a broad reaction scope, allowing benzylic and simple primary and secondary aliphatic alcohols to be employed as alkylating agents. A variety of oxindoles underwent selective mono‐C3‐alkylation in good‐to‐excellent
Kharasch reaction: Cu-catalyzed and non-Kharasch metal-free peroxidation of barbituric acids
作者:Oleg V. Bityukov、Vera A. Vil'、George K. Sazonov、Andrey S. Kirillov、Nikita V. Lukashin、Gennady I. Nikishin、Alexander O. Terent'ev
DOI:10.1016/j.tetlet.2019.02.042
日期:2019.3
It was discovered that the Kharasch peroxidation of barbituricacids proceeds both with a Cu-catalyst and without a metal catalyst. Despite the presence of possible thermal-initiated side oxidation pathways, α-tert-butylperoxybarbiturates were selectively prepared from substituted barbituricacids and tert-butyl hydroperoxide.
Reductive C-alkylation of barbituric acid derivatives with carbonyl compounds in the presence of platinum and palladium catalysts
作者:Branko S Jursic、Donna M Neumann
DOI:10.1016/s0040-4039(01)00621-9
日期:2001.6
Effective synthetic procedures for the preparation of mono- and di-C-alkylated barbituricacidderivatives through palladium and platinum catalytic hydrogenation of solutions of barbituricacids (unsubstituted, N-mono, and N,N′-disubstituted barbituricacids) and carbonyl compounds (aliphatic and aromatic aldehydes and ketones).