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, 253-52-1, name is Phthalazine, introducing its new discovery. Formula: C8H6N2
Photochromism of Simple 1,8a-Dihydroindolizines and 1,8a-Dihydro-5-azaindolizines
In this paper we report on the synthesis of new photochromic 1,8a-dihydroindolizines and 1,8a-dihydro-5-azaindolizines 19 and betaines 18 as well as their precursors 3,3-diphenyl-3H-pyrazoles 13 and cyclopropenes 15.The stuctures of the betaines 18 are proved for the first time by X-ray analysis of 18l.The last part of this paper deals with Hammett correlations of the rate constant of the 1,5-electrocyclisation and MINDO/3 calculations of the thermal ring closure 18 -> 19.
We¡¯ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, the role of 253-52-1, and how the biochemistry of the body works.Formula: C8H6N2
Reference£º
Phthalazine – Wikipedia,
Phthalazine | C8H6N131 – PubChem