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:Ibolya Prauda , István Greiner , Krisztina Ludányi ...
来源:[J].Synthetic Communications(IF 1.06), 2007, Vol.37 (2), pp.317-322Taylor & Francis
摘要:Abstract(#br)Simple N‐heterocycles were converted to N‐phosphono‐ and phosphinoxidomethyl derivatives by a solvent‐free microwave‐assisted condensation of the heterocycle, paraformaldehyde, and diethylphosphite or diphenylphosphine oxide in a convenient and, in most ca...
作者:Zheng Li , Quanrui Wang , Fenggang Tao
来源:[J].Synthetic Communications(IF 1.06), 2004, Vol.34 (9), pp.1691-1702Taylor & Francis
摘要:Abstract(#br)The synthesis of a series of novel tricyclic O,N‐heterocycles 7a(#br)–k(#br), a kind of unprecedented 2‐oxo‐[1,2,4]triazolo[3,2‐d][1,5]benzoxazepine derivatives, has been accomplished, featuring acid‐induced ring closure of the geminal arylazo isocyan...
作者:Dr. Hongyin Gao , Dr. Qing‐Long Xu , Dr. Muhammed Yousufuddin ...
来源:[J].Angewandte Chemie International Edition(IF 13.734), 2014, Vol.53 (10), pp.2701-2705Wiley
摘要:Abstract(#br)We disclose an efficient and operationally simple protocol for the preparation of fused N‐heterocycles starting from readily available 2‐nitrobiaryls and PhMgBr under mild conditions. More than two dozen N‐heterocycles, including two bioactive natural produc...
作者:Sheng‐Ying Hsieh , Benedikt Wanner , Dr. Philip Wheeler ...
来源:[J].Chemistry – A European Journal(IF 5.831), 2014, Vol.20 (24), pp.7228-7231Wiley
摘要:Abstract(#br)The kinetic resolution of N‐heterocycles with chiral acylating agents reveals a previously unrecognized stereoelectronic effect in amine acylation. Combined with a new achiral hydroxamate, this effect makes possible the resolution of various N‐heterocycles by u...
作者:Dr. Da‐Gang Yu , Francisco de Azambuja , Prof. Dr. Frank Glorius
来源:[J].Angewandte Chemie International Edition(IF 13.734), 2014, Vol.53 (10), pp.2754-2758Wiley
摘要:Abstract(#br)α‐Halo and pseudohalo ketones are used for the first time as C(sp3)‐based electrophiles in transition‐metal‐catalyzed CH activation and as oxidized alkyne equivalents in RhIII‐catalyzed redox‐neutral annulations to generate diverse N‐heterocycles...
作者:Sean M. McDonald , Soren K. Mellerup , Dr. Jinbao Peng ...
来源:[J].Chemistry – A European Journal(IF 5.831), 2015, Vol.21 (40), pp.13961-13970Wiley
摘要:... The formation of these two classes of compounds from the NHC–B,N‐heterocycles is highly selective depending on the external stimuli employed, and the resulting products have been studied for their interesting chemical and photophysical properties. The mechanism and p...
作者:Dinesh Talwar , Dr. Ho Yin Li , Emma Durham ...
来源:[J].Chemistry – A European Journal(IF 5.831), 2015, Vol.21 (14), pp.5370-5379Wiley
摘要:Abstract(#br)A cyclometalated iridium complex is shown to catalyse the transfer hydrogenation of various nitrogen heterocycles, including but not limited to quinolines, isoquinolines, indoles and pyridinium salts, in an aqueous solution of HCO2H/HCO2Na u...
作者:PETER J. COSTELLO , TERRY H. LEE , PAULA. HENSCHKE
来源:[J].Australian Journal of Grape and Wine Research(IF 2.958), 2001, Vol.7 (3), pp.160-167Wiley
摘要:... To verify these results, selected LAB were tested for the ability to produce the three sensorially potent N‐heterocycles, 2‐ethyltetrahydropyridine (ETPY), 2‐acetyltetrahydropyridine (ACTPY) and 2‐acetyl‐1‐pyrroline (ACPY), which are associated with the mousy ...

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