Chemical modification of plant alkaloids. I. Aminomethylation of barbituric acid derivatives by cytisine
摘要:
Reaction of cytisine with 1-mono- and 1,3-disubstituted 5-arylmethylbarbituric acids in the presence of formaldehyde results in aminomethylation of C-5 to form the corresponding 5-cytisylmethylbarbituric acids. The structures of the products are found using PMR spectroscopy mid mass spectrometry. 1-Phenyl-5-(2,4-dimethoxybenzyl)-5-cytisylmethylbarbituric acid is obtained as a mixture of two steroisomers in an approximately 2:1 ratio.
Iron-Catalyzed Batch/Continuous Flow C–H Functionalization Module for the Synthesis of Anticancer Peroxides
作者:Moreshwar B. Chaudhari、Suresh Moorthy、Sohan Patil、Girish Singh Bisht、Haneef Mohamed、Sudipta Basu、Boopathy Gnanaprakasam
DOI:10.1021/acs.joc.7b02854
日期:2018.2.2
with aliphatic peroxide was developed under mild conditions. A library of linear alkylated and arylated peroxides are synthesized in good to excellent yield. This method is highly selective and general for a range of biologically important derivatives of 2-oxindole, barbituric acid, and 4-hydroxy coumarin with a good functional group tolerance and without the cleavage of the peroxide bond. This peroxidation
Iridium supported on porous polypyridine-oxadiazole as high-activity and recyclable catalyst for the borrowing hydrogen reaction
作者:Jiahao Li、Anruo Mao、Wei Yao、Haiyan Zhu、Dawei Wang
DOI:10.1039/d2gc00190j
日期:——
HRTEM, SEM, and XPS, and revealed high catalytic activity for the reaction of dimethyl-6-aminouracil with benzylalcohols, 1,3-dimethylbarbituric acid with benzylalcohols and 2-aminobenzylamine and benzylalcohols through dehydrogenation and the borrowinghydrogenstrategy with alcohol or water as the solvent. In addition, this PPO-Ir catalyst could be recycled and reused without a manifest loss of