163685-98-1Relevant articles and documents
Reactivity and Controlled Redox Reactions of Salt-like Intermetallic Compounds in Imidazolium-Based Ionic Liquids
Feng, Xian-Juan,Lerch, Swantje,Biller, Harry,Micksch, Maik,Schmidt, Marcus,Baitinger, Michael,Strassner, Thomas,Grin, Yuri,B?hme, Bodo
, p. 205 - 215 (2021/01/29)
Substituted imidazolium ionic liquids (ILs) were investigated for their reactivity towards Na12Ge17 as a model system containing redox-sensitive Zintl cluster anions. The ILs proved widely inert for imidazolium cations with a 1,2,3-trisubstitution at least by alkyl groups, and for the anion bis(trifluoromethylsulfonyl)azanide (TFSI). A minute conversion of Na12Ge17 observed on long-time contact with such ILs was not caused by dissolution of the salt-like compound, and did thus not provide dissolved Ge clusters. Rather, a cation exchange led to the transfer of Na+ ions into solution. In contrast, by using benzophenone as an oxidizer, heterogeneous redox reactions of Na12Ge17 were initiated, transferring a considerable part of Na+ into solution. At optimized conditions, an X-ray amorphous product NaGe6.25 was obtained, which was thermally convertible to the crystalline type-II clathrate Na24–δGe136 with almost completely Na-filled polyhedral cages, and α-Ge. The presented method thus provides unexpected access to Na24–δGe136 in bulk quantities.
Unaromatized Tetrahydrobenzimidazole Synthesis from p-Benzoquinone and N-Arylamidines and their Cytotoxic Potential
Tran, Minh Quan,Nguyen, Thanh Binh,Sawadogo, Wamtinga Richard,Ermolenko, Ludmila,Song, Sungmi,Retailleau, Pascal,Diederich, Marc,Al-Mourabit, Ali
supporting information, p. 5878 - 5884 (2018/10/09)
A diverse set of unaromatized and densely functionalized tetrahydrobenzimidazole adducts were obtained in good yields by simple mixing p-benzoquinone 1 with N-arylamidines 2 under mild conditions. The main features of these adducts include a hemi N,O-acet
Vanadium-Catalyzed Oxidative C(CO)-C(CO) Bond Cleavage for C-N Bond Formation: One-Pot Domino Transformation of 1,2-Diketones and Amidines into Imides and Amides
Digwal, Chander Singh,Yadav, Upasana,Ramya, P. V. Sri,Sana, Sravani,Swain, Baijayantimala,Kamal, Ahmed
, p. 7332 - 7345 (2017/07/26)
A novel vanadium-catalyzed one-pot domino reaction of 1,2-diketones with amidines has been identified that enables their transformation into imides and amides. The reaction proceeds by dual acylation of amidines via oxidative C(CO)-C(CO) bond cleavage of 1,2-diketones to afford N,N′-diaroyl-N-arylbenzamidine intermediates. In the reaction, these intermediates are easily hydrolyzed into imides and amides through vanadium catalysis. This method provides a practical, simple, and mild synthetic approach to access a variety of imides as well as amides in high yields. Moreover, one-step construction of imide and amide bonds with a long-chain alkyl group is an attractive feature of this protocol.
