Jin, Yin-Huan Fang, Fan Zhang, Xiang Liu, Qing-Zhou Wang, Hao-Bo Tian, Shi-Kai Four-Component Reaction of <i>N</i>-Sulfonylimines, (Cyanomethylene)triphenylphosphorane, Nitromethane, and Formaldehyde for the Synthesis of 3-Substituted 2-Methylene-4-nitrobutanenitriles An efficient four-component synthesis of 3-substituted 2-methylene-4-nitrobutanenitriles has been developed from <i>N</i>-sulfonylimines, (cyanomethylene)triphenylphosphorane, nitromethane, and formaldehyde in the absence of catalysts and additives at room temperature. nitromethane;methylene;additive;absence;Substituted;Formaldehyde;synthesis;Cyanomethylene;formaldehyde;catalyst;cyanomethylene;room temperature;Nitromethane;Synthesi;Methylene 2011-05-20
    https://acs.figshare.com/articles/journal_contribution/Four_Component_Reaction_of_i_N_i_Sulfonylimines_Cyanomethylene_triphenylphosphorane_Nitromethane_and_Formaldehyde_for_the_Synthesis_of_3_Substituted_2_Methylene_4_nitrobutanenitriles/2650291
10.1021/jo200483n.s001