Diphenyl tetramethylpiperidine

The formed acyl radicals are reactive towards efficient radical trapping reagents such as 2,2,6,6-tetramethylpiperidine-l-oxyl radical (TEMPO), diphenyl diselenide and diphenyl disulphide, and A-f-butyl-a-phenylnitrone giving the respective adducts. ... 

Diphenyl tellurium bis[trifluoroacetate] reacted under the same conditions with tetrame-thylurea, sulfoxides, triphenylphosphane oxide and sulfide, triphenylarsane oxide, pyridine 1-oxides, tetramethylpiperidine, benzimidazole, morpholine, and 7V,Ar-diphenylthiourea to give 1 1 complexes as sharp-melting, colorless solids that are soluble in common organic solvents3. 

When diphenyl tellurium bis[trichloroacetale] was refluxed in dichloromethane with 4-methylpyridine, tetramethylpiperidine, or dimethylacetamide, 1 1 adducts of diphenyl tellurium dichloride with these ligands were isolated4. 

The amino(methylene)borane 84 has been postulated as an intermediate in the liquid-phase pyrolysis of [diphenyl(trimethylsilanyl)methyl]fluoro-(2,2,6,6-tetramethylpiperidin-1-yl)-borane in boiling hexadecane at 282°C. If this pyrolysis is performed in the presence of benzophenone, tetraphenylethene is obtained, which could originate from a Wittig-type reaction of 84 and (CeH5)2CO [35]. 

C20H23CIN2O5, Carbinoxamine maleate, 46B, 234 C20H25NO, 1,1-Diphenyl-3-piperidino-1-propanol, 46B, 234 C20H2 5N2O2 f 2,2,6,6-Tetramethylpiperidine-1-iminoxyl-4-(N-2-hydroxy-1-naphthaldehydeimine), 40B, 234... 

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