223115-52-4Relevant academic research and scientific papers
A two-stage continuous-flow synthesis of spirooxazine photochromic dyes
York, Mark,Edenharter, Adriana
, p. 172 - 177 (2013/03/29)
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.
Synthesis of green colored photochromic 6'-arylamino spiro [2H]naphth[1,2-b]oxazines
York, Mark,Evans, Richard A.
scheme or table, p. 3618 - 3628 (2011/02/16)
The published route to a series of 6'-arylamino substituted photochromic spirooxazines has been investigated with improvements made to perform the synthesis in satisfactory yield. The route has been exemplified with several novel derivatives prepared (including hydroxyl functionalised). Additionally, a one-pot procedure for the conversion of suitably functionalized 1,2-naphthoquinones into the photochromic compounds is reported. Copyright
Photochromic compounds
-
, (2008/06/13)
A photochromic compound has the formula (I) wherein R1is selected from the group including substituted amino aryl moieties, substituted cyclic amino aryl moieties and substituted N-indolinoaryl or N-tetrahydroquinolino aryl groups, R3/sup
