N1,N1,N2,N2-Tetramethyl-N1,N2-bis(sulfo)ethane-1,2-diaminium chloride as a highly efficient catalyst for synthesis of some nitrogen- and oxygen-containing heterocyclic compounds Journal title: Eurasian Chemical Communications Authors: Maryam Dashtizadeh, Fatemeh Reghbat, Eshagh Abdi, Zahra Bahadori, Abdolkarim Zare, Khadijeh Didehban... Subject(s): Chemistry, Multidisciplinary, Chemistry, Organic