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.
Synthesis of indoles and quinazolines via additive-controlled selective C-H activation/annulation of N -arylamidines and sulfoxonium ylides
Lai, Ruizhi,Wu, Xiaohua,Lv, Songyang,Zhang, Chen,He, Maoyao,Chen, Yuncan,Wang, Qiantao,Hai, Li,Wu, Yong
supporting information, p. 4039 - 4042 (2019/04/10)
Selective synthesis of indole and quinazoline products was achieved through a precise control of the C-H activation/annulation by changing the additives from NaOAc to CuF2/CsOAc. This strategy constructs indole and quinazoline scaffolds efficie
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
N-Heterocyclic carbene-catalyzed annulation of ynals with amidines: Access to 1,2,6-trisubstituted pyrimidin-4-ones
Xie, Yangxi,Wang, Jian
, p. 4597 - 4600 (2018/05/14)
An N-heterocyclic carbene-catalyzed annulation of ynals and amidines has been reported to construct pyrimidin-4-ones. The protocol features a broad substrate scope and mild conditions. Furthermore, an oxidative strategy to catalytically generate ynal-deri
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.
Copper-catalyzed oxidative diamination of terminal alkynes by amidines: Synthesis of 1,2,4-trisubstituted imidazoles
Li, Jihui,Neuville, Luc
supporting information, p. 1752 - 1755 (2013/06/26)
An efficient copper-catalyzed synthesis of 1,2,4-trisubstituted imidazoles using amidines and terminal alkynes has been developed. Overall, the oxidative process, which involves Na2CO3, pyridine, a catalytic amount of CuCl2/sub