In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 4062-60-6, name is N1,N2-Di-tert-butylethane-1,2-diamine, introducing its new discovery. Application In Synthesis of N1,N2-Di-tert-butylethane-1,2-diamine
Thermal ring cleavage of specifically substituted oxiranes results in the formation of conjugated carbonyl ylide intermediates which react by 1,5- and/or 1,7-electrocyclisation to give ring expanded products.While the spirooxiranes 5t, 6t, and 12t are transformed, as expected, only into 2,3-dihydrofuranes (21, 22, 50), the geometrically fixed compounds give rise to the formation of seven-membered ring isomers either partially (6c), or predominantly (5c), or exclusively (7-11, 12c). 1,7-Dipolar cyclisations also take place with participation of one or even two aromatic double bonds (7 -> 52, 8 -> 53, 9 -> 54, 12c -> 57, and 10 -> 55, 11 -> 56, resp.) affording mono- and dibenzo-dihydooxepines, respectively.The rearrangements of 5c to 27 and 6c to 28 show for the first time that the 8?-ring closure of 2-oxaheptatrienyl dipoles proceeds in the theoretically predicted conrotatory manner.The exclusive, i. e. periselective formation of dihydrooxepines during the thermolysis of compounds 7 – 11, 12c is explained by assuming a helical geometry of the dipolar intermediates in which the stereoelectronic situation is specially suitable for the – entropically less advantageous – 1,7-cyclisation process.
The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 4062-60-6 is helpful to your research. Application In Synthesis of N1,N2-Di-tert-butylethane-1,2-diamine
Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI