19298-29-4Relevant academic research and scientific papers
Palladium-catalyzed Csp2-H carbonylation of aromatic oximes: Selective access to benzo[d][1,2]oxazin-1-ones and 3-methyleneisoindolin-1-ones
Xu, Yanli,Hu, Weigao,Tang, Xiaodong,Zhao, Jinwu,Wu, Wanqing,Jiang, Huanfeng
, p. 6843 - 6846 (2015)
A highly selective palladium-catalyzed carbonylation of Csp2-H bonds with aromatic oximes for the synthesis of benzo[d][1,2]oxazin-1-ones and 3-methyleneisoindolin-1-ones has been developed. Interestingly, we found that the N-OH group of the oximes could be used as a directing group and/or an internal oxidant under different conditions. This transformation is supposed to proceed through a hydroxyl-directed ortho-Csp2-H carbonylation or activation of vinyl Csp2-H bond/ortho-Csp2-H carbonylation process. The uses of readily available starting materials, atmospheric pressure of carbon monoxide, as well as operational simplicity make this practical and atom-economical method particularly attractive. This journal is
Palladium-Catalyzed Decarboxylative ortho-C(sp2)?H Aroylation of N-Sulfoximine Benzamides at Room Temperature
Das, Prasenjit,Biswas, Promita,Guin, Joyram
, p. 920 - 925 (2020/03/04)
A palladium-catalyzed method for the decarboxylative ortho C?H acylation of N-sulfoximine benzamides is developed at room temperature. The catalytic method enables easy access to various functionalized 2-aroylaromatic carboxylic acid derivatives in good isolated yields. Based on our mechanistic studies, a Pd(II)/Pd(IV) catalytic cycle that involves aroyl radical intermediate is proposed for the reaction.
[4,5]-Fused-1,3-disubstituted-1,2-diazine-6-one derivatives with nitrogen containing substitutents in position one for the treatment of neoplasia
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, (2008/06/13)
[4,5]-Fused-1,3-disubstituted-1,2-diazine-6-one derivatives with nitrogen-containing substituents in position one are useful for inducing or promoting apoptosis and for arresting uncontrolled neoplastic cell proliferation, and are specifically useful in t
Copper-catalysed rearrangement of 4-substituted-2,3-1H-benzoxazine-1-thiones
Agirbas, Hikmet,Guener, Selahattin
, p. 257 - 263 (2007/10/03)
4-Substituted-2,3-1H-benzoxazine-1-thiones were prepared by the treatment of the corresponding benzoxazine-1-ones with P2S5. The thermal rearrangement of 4-substituted-2,3-1H-benzoxazine-1-thiones, catalysed by metallic copper, yield
Synthesis of Some 4-Substituted 1H-2,3-Benzoxazin-1-ones
Bansal, R. K.,Kumar, Girijesh,Jain, S. K.,Puri, B. K.
, p. 1045 (2007/10/02)
The title compounds have been prepared by treating the corresponding o-aroylbenzoic acids with hydroxylamine hydrochloride and sodium acetate in ethanol, and their structures established by elemental analyses and spectral data.The mechanism suggested for
