全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:... Han Hu , Jianmin Zhang , Shizheng Zhu
来源:[J].Tetrahedron Letters(IF 2.397), 2019Elsevier
摘要:Abstract(#br)An efficient Cu(II)-catalyzed radical addition of maleimides has been achieved. The identified copper catalyst enables the formation of oxime radicals (N–O ) by cleaving the O–H bond in ketoximes, followed by the radical addition to N -substituted maleimides. Th...
作者:... Han Hu , Jianmin Zhang , Shizheng Zhu
来源:[J].Tetrahedron Letters(IF 2.397), 2019, Vol.60 (43)Elsevier
摘要:Abstract(#br)An efficient Cu(II)-catalyzed radical addition of maleimides has been achieved. The identified copper catalyst enables the formation of oxime radicals (N–O ) by cleaving the O–H bond in ketoximes, followed by the radical addition to N -substituted maleimides. Th...
作者:Shizheng Zhu , Zixing Wang
来源:[J].Dyes and Pigments(IF 3.532), 2015, Vol.121, pp.138-146Elsevier
摘要:Abstract(#br)Organic dyes containing trifluoromethylated-pyrazolo[3, 4-b]quinoline were synthesized by using condensation reaction between substituted pyrazolo-4-formaldehyde and aryl amines in moderate yields. Quantum calculation, electrochemical, photophysical, and electrolumin...
作者:... Jinjin Wang , Jianwei Han , Shizheng Zhu
来源:[J].Tetrahedron(IF 2.803), 2013, Vol.69 (37), pp.7975-7980Elsevier
摘要:Abstract(#br)An efficient and straightforward nucleophilic substitution reaction between 2-(trifluoromethyl)-2-hydroxy-2 H -chromenes and various silyl enol ethers promoted by Lewis acid has been studied. A series of novel 4-functionalized-2-trifluoromethyl-3-ethoxycarbonyl-4 H -...
作者:... Shaoxiong Wu , Shizheng Zhu , Jian Hao
来源:[J].Tetrahedron(IF 2.803), 2013, Vol.69 (9), pp.2150-2156Elsevier
摘要:Abstract(#br)Optically active ( S )-2-aryl-4 (or 5)-phenyl-1,3-oxazolines and ( S )-2-fluoroalkyl-4-phenyl-1,3-oxazolines were synthesized from a tandem one-pot reaction of ( S )-2-amino-2-phenylethanol with a corresponding carboxylic acid in toluene at 90 °C in the presence...
作者:... Wen Wan , Shizheng Zhu , Jian Hao
来源:[J].Tetrahedron(IF 2.803), 2012, Vol.68 (13), pp.2858-2863Elsevier
摘要:Abstract(#br)A facile one-pot procedure has been developed for the synthesis of 1,3-imidazolines and 1,3-oxazolines bearing fluorinated alkyl groups at the 2-position. The reaction involves the condensation of N -monosubstituted ethane-1,2-diamines or 2-aminoethanols with a fluor...
作者:... Hua Chen , Shizheng Zhu , Jian Hao
来源:[J].Dyes and Pigments(IF 3.532), 2013, Vol.96 (3), pp.642-652Elsevier
摘要:Abstract(#br)A series of twisted fluorenyl anthracenes linked by a rigid sp 3 -hybridized carbon atom, containing an end-capping aryl substituent at either the C2-position of fluorene or at the C10-position of anthracene, have been synthesized and characterized. These materials e...
作者:... Jingwei Zhao , Jinming Gao , Shizheng Zhu
来源:[J].Tetrahedron(IF 2.803), 2013, Vol.69 (8), pp.1978-1986Elsevier
摘要:Abstract(#br)The C–H insertion reactions of 3-trifluoromethyl-4-diazopyrazolinones 1 with benzene and its derivatives catalyzed by Rh 2 (OAc) 4 were studied. It was found that the Csp 2 -H insertion products were obtained in good yields when anisole or xylene etc. was used, ...
作者:... Xiaowei Wang , Song Tao , Shizheng Zhu
来源:[J].Tetrahedron(IF 2.803), 2012, Vol.68 (30), pp.5969-5978Elsevier
摘要:Abstract(#br)Refluxing of 3-trifluoromethyl-4-diazopyrazolinones 1 with dimethyl acetylenedicarboxylates 2 in toluene for 48 h afforded trifluoromethyl-substituted pyrazolo [1,5- d ][1,2,4]triazin-7-ones, which resulted from the [3+2] dipolar cycloaddition followed by a rear...
作者:Shizheng Zhu , Hongmei Deng
来源:[J].Tetrahedron Letters(IF 2.397), 2012, Vol.53 (19), pp.2469-2472Elsevier
摘要:Abstract(#br)A series of trifluoromethylated cyclopenta[ b ]pyran derivatives were synthesized efficiently from 1,3-cyclopentanedione, arylaldehydes, and ethyl 4,4,4-trifluoro-3-oxobutanoate via one-pot multi-component reaction catalyzed by NH 4 OAc. This one-pot multi-component ...

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