Synthesis of Green Colored Photochromic 6′-Arylamino Spiro [2H]Naphth[1,2-b]oxazines
摘要:
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.
Photo- and thermochromic spirans 37.* New symmetrical bisspiropyrans of the indoline series
作者:N. A. Voloshin、E. V. Solov’eva、S. O. Bezugliy、A. V. Metelitsa、V. I. Minkin
DOI:10.1007/s10593-012-1145-5
日期:2012.12
New symmetrical bisspiropyrans of the indoline series, which have photochromic properties and are characterized by substantially higher absorption capacity of cyclic isomers in comparison to the monospiropyrans, were obtained on the basis of 4,6-dihydroxy-5-methylisophthalaldehyde.
Spiropyrans and spirooxazines 5. Synthesis of photochromic 8-(4,5-diphenyl-1,3-oxazol-2-y1)-substituted spiro[indoline-benzopyrans]
作者:N. A. Voloshin、E. B. Gaeva、A. V. Chernyshev、A. V. Metelitsa、V. I. Minkin
DOI:10.1007/s11172-009-0024-4
日期:2009.1
Photochromic spiro[indoline-benzopyrans] containing 4,5-diphenyloxazolyl group at position 8 of the benzopyran fragment have been obtained. New diphenyloxazolyl-substituted spiropyrans manifest considerably higher thermal stability of the merocyanine isomers than their naphthopyran analogs.
Spiropyrans and spirooxazines 8. 5′-(1,3-Benzothiazol-2-yl)-substituted spiro[indoline-2,3′-naphthopyrans]: synthesis and spectral and photochromic properties
作者:N. A. Voloshin、A. V. Chernyshev、A. V. Metelitsa、E. B. Gaeva、V. I. Minkin
DOI:10.1007/s11172-011-0289-2
日期:2011.9
Novel photochromic 5′-(1,3-benzothiazol-2-yl)-substituted spiro[indoline-2,3′-naphthopyrans] possessing luminescence properties in both the cyclic and merocyanine forms were synthesized. Unlike the 8′-(1,3-benzothiazol-2-yl)-substituted benzopyran analogs, the synthesized compounds are characterized by the lower relative stability of the merocyanine isomers.
Photochromic and thermochromic spiranes. 34.* synthesis of photochromic 5-(4,5-diphenyl-1,3-oxazol-2-yl)-substituted spirobenzochromeneindolines
作者:N. A. Voloshin、A. V. Chernyshev、A. V. Metelitsa、V. I. Minkin
DOI:10.1007/s10593-011-0848-3
日期:2011.10
A simple and effective method is proposed for the synthesis of 4,5-diphenyloxazolyl-substituted o-hydroxynaphthaldehydes. Photochromic spirobenzochromeneindolines containing a 4,5-diphenyl-oxazole group at position 5 of the benzochromene fragment were obtained. In the cyclic form the new (diphenyloxazolyl)-substituted spiropyrans exhibit luminescent properties.