1.
Molecules
; 14(12): 4838-48, 2009 Nov 25.
Article
in English
| MEDLINE
| ID: mdl-20032862
ABSTRACT
Novel coumarin derivatives, 2-oxo-2H-chromenecarbaldehyde hydrazones were prepared by reaction of substituted 2-oxo-2H-chromenecarbaldehydes with N-aminoimides in ethanol in the presence of 4-toluenesulfonic acid as catalyst. The photochromic and thermochromic properties of the prepared compounds were investigated.