N,N-Dimethylbiguanide immobilized on mesoporous and magnetically separable silica: Highly selective and feasible organocatalyst for synthesis of β-nitroalcohols Gisya Abdi, Abdolhamid Alizadeh, Mohammad Khodaei, Mustaffa Shamsuddin, Sohrab Ghouzivand, Mitra Fakhari, Mojtaba Beygzadeh, Amirhossein Fallah, XML Requires Subscription PDF Requires Subscription HTML downloads: 161 views: 19