201024-81-9Relevant articles and documents
Enthalpies of combustion of 2,4,6-trimethylbenzonitrile, 2,4,6-trimethylbenzonitrile N-oxide, 2,6-dimethylbenzonitrile, 2,4,6-trimethoxybenzonitrile, and 2,4,6-trimethoxybenzonitrile N-oxide: the dissociation ethalpies of the (N-O) bonds
Acree, W. E.,Tucker, Sheryl A.,Zvaigzne, Anita I.,Meng-Yan, Yang,Pilcher, G.,Ribeiro da Silva, Maria D. M. C.
, p. 31 - 36 (1991)
The standard (pdeg = 0.1 MPa) molar enthalpies of combustion at 298.15 K were measured by static-bomb calorimetry and the standard molar enthalpies of sublimation at 298.15 K were measured by microcalorimetry for the following aromatic nitriles and aromatic nitrile N-oxides: .From the standard molar enthalpies of formation of the gaseous compounds, the molar dissociation enthalpies of the (N-O) bonds were derived: D(N-O)/(kJ*mol-1): trimethylbenzonitrile N-oxide, (222.2 +/- 4.6); trimethoxybenzonitrile N-oxide, (232.8 +/- 3.8).
N,N-bis(tert-butyldimethylsilyloxy) aminobenzene as a new synthetic equivalent of nitrosobenzene
Dilman,Lyapkalo,Belyakov,Ioffe,Strelenko,Tartakovsky
, p. 1649 - 1650 (2000)
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Furey,Kan
, p. 3085 (1968)
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N-Arylalkyl-N-phenylhydroxylamines as novel photo-induced DNA-cleaving agents
Hwu,Tsay,Chen,Patel,Chou
, p. 1427 - 1428 (1994)
Single-strand cleavage of DNA was accomplished by photolysis of various N-arylalkyl-N-phenylhydroxylamines under aerobic conditions for 3 h with 312 nm UV light, which functioned as the trigger to initiate the new and controllable DNA cleavage process.
Regio- and Enantioselective (3+3) Cycloaddition of Nitrones with 2-Indolylmethanols Enabled by Cooperative Organocatalysis
Li, Tian-Zhen,Liu, Si-Jia,Sun, Yu-Wen,Deng, Shuang,Tan, Wei,Jiao, Yinchun,Zhang, Yu-Chen,Shi, Feng
supporting information, p. 2355 - 2363 (2020/12/09)
The regio- and enantioselective (3+3) cycloaddition of nitrones with 2-indolylmethanols was accomplished by the cooperative catalysis of hexafluoroisopropanol (HFIP) and chiral phosphoric acid (CPA). Using this approach, a series of indole-fused six-membered heterocycles were synthesized in high yields (up to 98 %), with excellent enantioselectivities (up to 96 % ee) and exclusive regiospecificity. This approach enabled not only the first organocatalytic asymmetric (3+3) cycloaddition of nitrones but also the first C3-nucleophilic asymmetric (3+3) cycloaddition of 2-indolylmethanols. More importantly, theoretical calculations elucidated the role of the cocatalyst HFIP in helping CPA control the reactivity and enantioselectivity of the reaction, demonstrating a new mode of cooperative catalysis.
Hydrazones as Substrates in the Synthesis of Isoxazolidines via a KOH-Promoted One-Pot Three-Component Cycloaddition with Nitroso Compounds and Olefins
Chen, Wenwen,Li, Wenhui,Li, Xing,Lin, Jianying,Wei, Wen-Long,Zhai, Pingan
, p. 17710 - 17721 (2021/12/09)
Hydrazones have been employed as the starting materials in a KOH-mediated one-pot three-component cycloaddition with readily accessible nitroso compounds and olefins to construct various isoxazolidines. Compared with diazo compounds as starting materials, this methodology could afford a wider range of products in good to excellent yields and diastereoselectivities for most substrates, and hydrazones are cheaper, more accessible, and safer substrates. The experimental study shows that the choice of suitable hydrazones is crucial.
