N. Mahmoodi, M. Pourhossein Parizad, K. Hosseini
Jan 21, 2015
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Phosphorus, Sulfur, and Silicon and the Related Elements
Abstract
GRAPHICAL ABSTRACT Abstract A one-pot synthesis of quetiapine from dibenzo[b,f][1,4]thiazepin-11(10H)-one and 4-hydroxyethoxy ethyl piperazine (HEEP) in toluene using N,N-dimethylaniline (DMA) and pyrophosphoryl chloride (P2O3Cl4) as a green reductive chlorination agent is described. A significant shortening of reaction times, a nearly quantitative yield, and high atom economy in the product were observed. The simplicity of the reaction, ease of execution, simple workup, and good yields, together with the use of easily accessible starting materials and an environmentally friendly procedure, are hallmarks of this process.