Di-fert-butylperoxide

Table 5 Experimental and predicted activation parameters for the reduction of di-fert-butylperoxide by a number of radical anion homogeneous donors."...

Chromium trimethoxide was obtained by the photooxidation of aryl tricarbonyl chromium in methanol the valency of chromium in the product was established by absorption spectra and magnetic studies. Hagihara and Yamazaki synthesized chromium tetra-tert-butoxide by heating a mixture of te(benzene)chromium and di-fert-butylperoxide in the presence of benzene or petroleum ether in a sealed tube at 90° for about 20 h. The excess of solvent was removed and the green residue was sublimed in vacuo. It was found that this residue was contaminated with a small amount of biphenyl as an impurity which was removed as a complex by the addition of 2,4,7-trinitrofluorenone. The blue product thus obtained showed no characteristic absorption bands due to biphenyl and was characterized as chromium tetra-terr-butoxide Cr(OBu )4. 

---