1423716-72-6Relevant academic research and scientific papers
A two-stage continuous-flow synthesis of spirooxazine photochromic dyes
York, Mark,Edenharter, Adriana
, p. 172 - 177 (2013)
A continuous-flow process for the synthesis of several known and previously unreported spirooxazine photochromic dyes is reported. The process proceeds via an initial copper catalysed addition of substituted anilines to naphthalene-1,2-dione. This is followed by reaction with 1,3,3-trimethyl-2- methyleneindoline in the presence of hydroxylamine hydrochloride to give the desired spirooxazine products. The photochromic dyes were then cast into lenses to allow a preliminary evaluation of their properties.
