Self-coupling reaction

Similarly, aromadc Grignaid reagents undeiga free-radical self-coupling reactions when treated with MCI2 (M=Cr, Mn, Ft, Co, Ni), e.g. ... 

A rapid self coupling reaction of /i-naphthols occurs in presence ofiron(III) chloride, FeCl3.6H20, using a focused MW oven under solvent-free conditions and is superior to classical heating mode [113]. 

The only reactions of diazoazoles with electrophiles are those with acids. The reaction with acids at room temperature or below has already been reviewed in the section on diazo-diazonium equilibrium. This section includes reported reactions occuring at higher temperatures which generally resulted in decomposition and/or self-coupling reactions. 

Diazo-5-phenyl-1,2,4-triazole reacted with methylamine to give the corresponding triazene (83JHC1629). Triazeno polymer 240 was formed by a self-coupling reaction of the diazotriazole obtained from guanazole... 

The symmetry of this hydrocarbon makes possible a self-coupling reaction with 2-bromo-2-phenylpropane. 

Preparation of telechelic polymers by ATRCC was also demonstrated. The concept is based on the activation of the dormant species at the chain ends of polystyrene (PS-Br) prepared by ATRP and also functional ATRP initiator (F-R-Br) in the absence of a monomer. Depending on the number of functionality of the polymer used in the system, ATRCC yields co-polystyrene and a,co-polystyrene telechelics. However, at least in principle, not only the desired functional polymers but also various side products may be formed due to the self coupling reactions of macroradicals generated from PS-Br, and low-molecular weight radicals from F-R-Br. The possible reactions of the model system are depicted in Scheme 3. 

Scheme 7.3 Palladium-catalyzed self-coupling reactions of arylboronic acids S studied by ESI-MS.

A Novel Self-Coupling Reaction of Cyclic Ketones Under High-Pressure Mercury Lamp... 

Ji, S. -J., Matsushita, M., Takahashi, T. T, and Horiuchi, C. A., Novel self-coupling reaction of cychc ketones under a high-pressure mercury lamp. Tetrahedron Lett., 40, 6791,1999. 

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