| Author(s) | Shar S. AI-Shihry |
| Affiliation | Department of Chemistry, College of Education, P.G. Box 1759, King Faisal University, Hofuf 31982, Saudi Arabia |
| Title | New Class of Photochromic Heterocyclic Compounds |
| Source | Journal of King Saud University. Science. Volume 13, No 2. (2001/1421) |
| Abstract | Base catalyzed condensation of fulgide (7) with compounds containing active methylene groups such as (8a - 8d) has yielded new class of photo chromatic compounds 3-Dicyclopropylmethylene-4-E-[I-(2,5- dimethyl- 3-furyl)ethylidene)- 5-(4-nitrophenylcyanomethylenetetrahydrofuran-2-one( lOa), 3-Dicyclopropyl-methylene- 4- E-[ 1-(2,5 -di methyl- 3-furyl)ethyl idene] -5-(3, 4-dichl- orophenylcyanomethylenetetrahydrofuran- 2- one (lOb), 3-Dicyclopropyl methyl ene-4-E-[I-(2,5-dimethyl-3-furyl)ethylidene]-5-(4-florophenyl-cyanomethylene- tetrahydrofuran-2-one (IOc) and 3-Dicyclopropylmethylene-4-E-[ 1-(2,5-dimethyl-3- furyl)ethylidene)-5-(4-chlorophenylcyanomethylenetetrahydrofuran-2-one (\Od). On irradiation with DV light, these compounds photocyclize to compounds having long wavelength absorption bands "ma, at (554,546,530, 529 nm.) respectively. The spectroscopic and photochromic properties of these compounds were studied. Keywords: Fulgide; photochromic; calor form; succinic anhydride. DV. |
