821-42-1Relevant articles and documents
Determination of Rate Constants for Formation and Decomposition of Color Products in the Fujiwara Reaction Using Benzotrichloride
Okumura, Kazuo,Wada, Toshiko,Yamaoka, Kiyoshi,Uno, Toyozo
, p. 174 - 178 (2007/10/02)
The rate constants for the formation and the decomposition of color products in the Fujiwara reaction using benzotrichloride (α,α,α-trichlorotoluene) as the starting material were evaluated by means of simultaneous nonlinear least-squares fitting for the time course data of three compounds.The apparent rate constants for the formation of red and yellow compounds are 0.16 (s-1) and 0.095 (s-1), respectively, and those for the decomposition of these chromophores are 10.3 (s-1) and 0.67 (s-1), respectively.These results indicate that the red compound which is the main color compound in the Fujiwara reaction is very unstable and the yellow compound is rather stable.It was found that 40.3percent of benzotrichloride is converted to the red compound, 23.9percent to the yellow compound and 35.8percent to other compounds.Keywords-Fujiwara reaction; benzotrichloride; rate constant; MULTI; nonlinear least-squares; curve-fitting
