Zeolite (H-ZSM 5)-catalysed reduction of conjugated nitroalkenes with sodium cyanoborohydride
作者:Anuradha Gupta、Azizul Haque、Yashwant D. Vankar
DOI:10.1039/cc9960001653
日期:——
Conjugated nitroalkenes are readily reduced to the corresponding nitroalkanes with sodium cyanoborohydride in the presence of the zeolite H-ZSM 5 in methanol.
Synthesis of Tetrasubstituted NH Pyrroles and Polysubstituted Furans via an Addition and Cyclization Strategy
作者:Zheng-Hui Guan、Liang Li、Mi-Na Zhao、Zhi-Hui Ren、Jianli Li
DOI:10.1055/s-0031-1289993
日期:2012.2
enamino esters with nitroolefins provides a straightforward and general method for the synthesis of tetrasubstituted NH pyrroles. This novel method tolerates a wide range of functionality, and allows for rapid elaboration of the nitroolefins into a variety of substituted pyrroles in good yields. Further, an efficient KOAc-promoted addition and cyclization protocol toward substituted furans has been
Efficient Preparation of 2-Indolyl-1-nitroalkane Derivatives Employing Nitroalkenes as Versatile Michael Acceptors: New Practical Linear Approach to Alkyl 9<i>H</i>-β-Carboline-4-carboxylate
The combination of cerium(III) chloride heptahydrate and sodium iodide supported on silica gel is known to promote Michael-type additions. Continuing our work on solvent-free conditions, the CeCl3·7H2O−NaI−SiO2 system catalyzes the addition of a variety of indoles and nitroalkenes, giving 2-indolyl-1-nitroalkane derivatives in good yields. Development of this method has resulted in a new protocol for