83846-54-2Relevant academic research and scientific papers
Intramolecular Steric Factors in the Thermolysis of 4-Alkylidine-1-pyrazolines
LeFevre, Gerard N.,Crawford, Robert J.
, p. 1019 - 1027 (2007/10/02)
Secondary deuterium kinetic isotope effects and product proportions are measured for several methyl-substituted 4-methylene-1-pyrazolines and deuterated isotopomers.The kinetic data support a single-bond-cleavage mechanism, and the products indicate that three modes of ring closure are required.Evidence is presented for a series of monomethyl compounds to suggest that the mechanism is more complex than a two-step scheme would predict and that the interconversion of a series of intermediates 46 is required.
