278-80-8Relevant articles and documents
REACTIONS OF DIAZOALKANES WITH UNSATURATED COMPOUNDS. 6. CATALYTIC CYCLOPROPANATION OF UNSATURATED HYDROCARBONS AND THEIR DERIVATIVES WITH DIAZOMETHANE
Dzhemilev, U. M.,Dokichev, V. A.,Sultanov, S. Z.,Khusnutdinov, R. I.,Tomilov, Yu. V.,et al.
, p. 1707 - 1714 (2007/10/02)
A systematic study has been conducted of the catalytic reaction of diazomethane with cyclic and polycyclic unsaturated hydrocarbons, conjugated dienes, as well as with a series of functionalized unsaturated conpounds.The feasibility of using transition metal, nontransition metal, and rare earth metal compounds of, for example, Co, Ni, Zr, Rh, and Dy, has been demonstrated for the first time.It has also been established that Pd(acac)2 has very high activity as a catalyst for the cyclopropanation of terminal and endocyclic double bonds by diazomethane, and that its activity is reduced upon the introduction of n-donor ligands or in the presence of strong polar solvents.
Organic Peroxides, XIV. The Thermal Decomposition of Polycyclic tert-Butyl Bridgehead Peroxycarboxylates
Ruechardt, Christoph,Golzke, Volker,Range, Guenter
, p. 2769 - 2785 (2007/10/02)
Eleven bridgehead peresters (1, 2, 5 - 8, 10, 12, 14, 18, 21) have been prepared for the first time and the products and the kinetics of their thermal decomposition were investigated.The correlations of all known thermolysis constants of bridgehead peresters with the steric substituent constants φf, with the solvolysis constants of the corresponding bridgehead bromides, as well as with the change in strain enthalpy ΔHsp for hydride abstraction from the bridgehead, as calculated by the procedure of v.R.Schleyer, were analysed.The thermolysis constants of these peresters are mainly determined by the polar effect in the transition state of the perester fragmentation.
