Efficient [WO4] 2–-Catalyzed Chemical Fixation of Carbon Dioxide with 2-Aminobenzonitriles to Quinazoline-2, 4 (1 H, 3 H)-diones

T Kimura, H Sunaba, K Kamata, N Mizuno

Index: Kimura, Toshihiro; Sunaba, Hanako; Kamata, Keigo; Mizuno, Noritaka Inorganic Chemistry, 2012 , vol. 51, # 23 p. 13001 - 13008

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Citation Number: 46

Abstract

A simple monomeric tungstate, TBA2 [WO4](I, TBA= tetra-n-butylammonium), could act as an efficient homogeneous catalyst for chemical fixation of CO2 with 2-aminobenzonitriles to quinazoline-2, 4 (1 H, 3 H)-diones. Various kinds of structurally diverse 2-aminobenzonitriles could be converted into the corresponding quinazoline-2, 4 (1 H, 3 H)-diones in high yields at atmospheric pressure of CO2. Kinetics and DFT calculations showed that I plays an ...