Chemical engineers ensure the efficiency and safety of chemical processes, adapt the chemical make-up of products to meet environmental or economic needs, and apply new technologies to improve existing processes. Reference of 1317-39-1. Introducing a new discovery about 1317-39-1, Name is Copper(I) oxide
The invention concerns a heterocyclene derivative of the formula I wherein Ar1 is optionally substituted phenyl, naphthyl or a 9- or 10-membered bicyclic heterocyclic moiety; A1 is a direct link to X1 or (1-3C)alkylene; X1 is oxy, thio, sulphinyl, sulphonyl or imino; Ar2 is optionally substituted 5-membered heterocyclene moiety; R1 is (1-4C)alkyl, (3-4C)alkenyl or (3-4C)alkynyl; and R2 and R3 together form a group of the formula -A2-X2-A3- which, together with the carbon atom to which A2 and A3 are attached, defines a ring having 5 to 7 ring atoms, wherein each of A2 and A3 is (1-3C)alkylene and X2 is oxy, thio, sulphinyl or sulphonyl; or a pharmaceutically-acceptable salt thereof. The compounds of the invention are inhibitors of the enzyme 5-lipoxygenase
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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”