71270-63-8Relevant academic research and scientific papers
Optimizing ring-opening polymerization of ε-caprolactone by using aluminum complexes bearing amide as catalysts and their application in synthesizing poly-ε-caprolactone with special initiators and other polycycloesters
Tseng, Hsi-Ching,Chen, Fu-Shen,Chiang, Michael Y.,Lu, Wei-Yi,Chen, Yu-Hsieh,Lai, Yi-Chun,Chen, Hsuan-Ying
, p. 90682 - 90690 (2015/11/11)
A series of aluminum complexes bearing amidate ligands, including acylamide, sulfonamide, and aryl carbamate, was synthesized. In addition, the optimization of ring-opening polymerization of ε-caprolactone by using these aluminum complexes as catalysts was studied. Polymerization results revealed that steric bulky groups in anilinyl groups decreased the catalytic activity of aluminum sulfonamide complexes but increased that of aluminum-acylamide complexes. Compared with other complexes bearing N-(4-methoxyphenyl) acylamidate and N-(4-methoxyphenyl) p-tolylsulfonamidate, an aluminum complex (MfOMeAlMe2) bearing methyl (4-methoxyphenyl)carbamate had the highest catalytic activity with an ideal molecular weight control and narrow polydispersity index (PDI). Other poly-ε-caprolactones with special end chains, such as PEG-200, 2-dimethylaminoethanol, bis(2-hydroxyethyl) disulfide, 2-((2-hydroxyethyl)disulfanyl)ethyl 2-bromo-2-methylpropanoate, and PEG-polyester-bearing disulfide group, were successfully synthesized using MfOMeAlMe2 as the catalyst. The polymerization of δ-valerolactone and 2-bromo-ε-caprolactone by using BnOH as an initiator and MfOMeAlMe2 as the catalyst resulted in poly-δ-valerolactone and poly-2-bromo-ε-caprolactone, respectively, with a precise molecular weight and a narrow PDI as well as poly-ε-caprolactones.
4-Amino-5-(arylaminomethyl)-2-(methylthio)furo[2,3-d]pyrimidines via Mitsunobu reaction of 4-amino-5-(hydroxymethyl)-2-(methylthio)furo[2,3-d] pyrimidine with N-mesyl- and N-nosylarylamines
Masevicius, Viktoras,Petraityte, Grazina,Tumkevicius, Sigitas
experimental part, p. 1329 - 1338 (2012/07/01)
An efficient method for the synthesis of 4-amino-5-(arylaminomethyl)-2- (methylthio)furo[2,3-d]pyrimidines via the Mitsunobu reaction of 4-amino-5-(hydroxymethyl)-2-(methylthio)furo[2,3-d]pyrimidine with N-mesyl- and N-nosylarylamines, and subsequent removal of the mesyl and nosyl groups, has been developed. The influence of substituents in the arylamine moiety on the Mitsunobu reaction was investigated. An unexpected nucleophilic substitution of a nitro group in the reaction of N-({4-amino-2-(methylsulfonyl)furo[2,3-d] pyrimidin-5-yl}methyl)-4-nitro-N-phenylbenzenesulfonamide with sodium methoxide was observed. Georg Thieme Verlag Stuttgart · New York.
Synthesis and aldose reductase inhibitory activities of novel N-nitromethylsulfonanilide derivatives
Inoue, Jun,Cui, Ying-She,Sakai, Osamu,Nakamura, Yoshikuni,Kogiso, Hiromi,Kador, Peter F.
, p. 2167 - 2173 (2007/10/03)
A novel series of 14 N-nitromethylsulfonanilide derivatives were synthesized and evaluated for their ability to inhibit recombinant aldose reductase. Computational docking simulations provided a good explanation for the observed structure-activity relatio
