Insights on Copper, Manganese, and Nickel/ZSM-5 catalytic mechanisms for nitric oxides selective reduction with ammonia

<p>Aryl–aryl cross-coupling constitutes one of the most widely used procedures for the synthesis of high-value materials, ranging from pharmaceuticals to organic electronics and conducting polymers. The assembly of (hetero)biaryl scaffolds generally requires multiple steps; coupling partners must be functionalized before the key bond-forming event is considered. Thus, the development of selective C–H arylation processes in arenes, that side-step the need for prefunctionalized partners, is crucial for streamlining the construction of these key architectures. Here we report an expedient, one-pot assembly of (hetero)biaryl motifs using photocatalysis and two non-prefunctionalized arene partners. The approach is underpinned by the activation of a C–H bond in an arene coupling partner using the interrupted Pummerer reaction. A unique pairing of the organic photoredox catalyst and the intermediate dibenzothiophenium salts enables highly selective reduction in the presence of sensitive functionalities. The utility of the metal-free, one-pot strategy is exemplified by the synthesis of a bioactive natural product and the modification of complex molecules of societal importance.</p>

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MANGANIN

Alloy Digest ◽

10.31399/asm.ad.cu0126 ◽

1963 ◽

Vol 12 (3) ◽

Keyword(s):

Physical Properties ◽

Copper Manganese ◽

Electrical Apparatus

Abstract MANGANIN is an alloy of copper, manganese and nickel recommended for resistors in precision built electrical apparatus and for shunts for D.C. ammeters. This datasheet provides information on composition and physical properties. Filing Code: Cu-126. Producer or source: Driver-Harris Company.

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CONFLEX 720

Alloy Digest ◽

10.31399/asm.ad.cu0143 ◽

1964 ◽

Vol 13 (7) ◽

Keyword(s):

Heat Treatment ◽

Corrosion Resistance ◽

Physical Properties ◽

Surface Treatment ◽

Nickel Alloy ◽

High Strength ◽

Heat Treating ◽

Age Hardening ◽

Copper Manganese ◽

Hardening Heat Treatment

Abstract CONFLEX 720 is a copper-manganese-nickel alloy that responds to an age-hardening heat treatment for high strength and corrosion resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as heat treating, machining, joining, and surface treatment. Filing Code: Cu-143. Producer or source: Metals & Controls Inc..

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