5378-33-6Relevant articles and documents
COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING THE SAME
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Paragraph 0258-0261, (2021/01/29)
The present specification provides a compound represented by chemical formula 1 and an organic light emitting device including the same. The compound may improve lifespan characteristics of the organic light emitting device.
COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING SAME
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Paragraph 0218-0221, (2021/01/29)
The present specification provides a compound represented by chemical formula 1 and an organic light emitting device including the same. The compound may improve lifespan characteristics of the organic light emitting device.
Copper-Catalyzed Enantioconvergent Cross-Coupling of Racemic Alkyl Bromides with Azole C(sp2)?H Bonds
Chang, Xiao-Yong,Chen, Ji-Jun,Gu, Qiang-Shuai,Jiang, Sheng-Peng,Li, Zhong-Liang,Liu, Lin,Liu, Xiao-Dong,Liu, Xin-Yuan,Su, Xiao-Long,Wang, Fu-Li,Yang, Chang-Jiang,Ye, Liu
supporting information, p. 380 - 384 (2020/10/30)
The development of enantioconvergent cross-coupling of racemic alkyl halides directly with heteroarene C(sp2)?H bonds has been impeded by the use of a base at elevated temperature that leads to racemization. We herein report a copper(I)/cinchona-alkaloid-derived N,N,P-ligand catalytic system that enables oxidative addition with racemic alkyl bromides under mild conditions. Thus, coupling with azole C(sp2)?H bonds has been achieved in high enantioselectivity, affording a number of potentially useful α-chiral alkylated azoles, such as 1,3,4-oxadiazoles, oxazoles, and benzo[d]oxazoles as well as 1,3,4-triazoles, for drug discovery. Mechanistic experiments indicated facile deprotonation of an azole C(sp2)?H bond and the involvement of alkyl radical species under the reaction conditions.
Method for constructing 2-(3-chlorophenyl)-1,3,4-oxadiazole in one step by using DMF as carbon source
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Paragraph 0016, (2019/03/08)
The invention discloses a method for constructing 2-(3-chlorophenyl)-1,3,4-oxadiazole in one step by using DMF (N, N-dimethylformamide) as a carbon source. The method includes taking 3-chlorobenzhydrazide as a reaction raw material, and taking DMF (N, N-d
DMF as Methine Source: Copper-Catalyzed Direct Annulation of Hydrazides to 1,3,4-Oxadiazoles
Wang, Shoucai,Wang, Kai,Kong, Xiangfei,Zhang, Shuhua,Jiang, Guangbin,Ji, Fanghua
supporting information, p. 3986 - 3990 (2019/07/31)
An unprecedented Cu-catalyzed direct annulation of hydrazides with N,N-dimethylformamide (DMF) was developed, providing an efficient synthesis of valuable 1,3,4-oxadiazoles. This process features the short reaction time and can be safely conducted on gram scale. The reaction also facilitated the convenient synthesis of 1,3,4-oxadiazole-2(3H)-ones. Moreover, the mechanistic studies suggest that the source of CH is from the N-methyl group of DMF. (Figure presented.).
Iodine-Mediated Domino Oxidative Cyclization: One-Pot Synthesis of 1,3,4-Oxadiazoles via Oxidative Cleavage of C(sp2)-H or C(sp)-H Bond
Fan, Yuxing,He, Yongqin,Liu, Xingxing,Hu, Ting,Ma, Haojie,Yang, Xiaodong,Luo, Xinliang,Huang, Guosheng
, p. 6820 - 6825 (2016/08/16)
An I2-promoted, metal-free domino protocol for one-pot synthesis of 1,3,4-oxadiazoles has been developed via oxidative cleavage of C(sp2)-H or C(sp)-H bonds, followed by cyclization and deacylation. In this reaction, the use of K2CO3 as a base is found to be an essential factor in the cyclization and the C-C bond cleavage. This procedure proceeded smoothly in moderate to high yields with good functional group compatibility.
Novel, fast and efficient one-pot sonochemical synthesis of 2-aryl-1,3,4-oxadiazoles
Rouhani, Morteza,Ramazani, Ali,Joo, Sang Woo
, p. 262 - 267 (2013/10/01)
Ultrasound promoted synthesis of 2-aryl-1,3,4-oxadiazoles at ambient temperature is reported. The remarkable features of the new procedure are shorter reaction time, excellent yields, cleaner reaction profile and simple experimental and workup procedure.
Microwave promoted one-pot synthesis of 2-aryl substituted 1,3,4-oxadiazoles and 1,2,4-oxadiazole derivatives using Al3+-K10 clay as a heterogeneous catalyst
Suresh, Dhanusu,Kanagaraj, Kuppusamy,Pitchumani, Kasi
supporting information, p. 3678 - 3682 (2014/06/23)
An efficient, inexpensive method is developed for the one-pot synthesis of 2-aryl substituted 1,3,4-oxadiazoles and 1,2,4-oxadiazoles starting from acid hydrazides and trimethyl orthoformate under solvent-free, microwave conditions using a reusable Alsup
The reaction of (N-isocyanimino)triphenylphosphorane with benzoic acid derivatives: a novel synthesis of 2-aryl-1,3,4-oxadiazole derivatives
Souldozi, Ali,Ramazani, Ali
, p. 1549 - 1551 (2008/02/03)
The reactions of benzoic acid derivatives with (N-isocyanimino)triphenylphosphorane proceed smoothly at room temperature to afford 2-aryl-1,3,4-oxadiazoles in high yields.