Authors : S. S. Thakare
Page Nos : 1271-1277
Description :
1-(2’-Furyl)-3-(2”-hydroxy-5”-chloro-3”-substituted phenyl)-1,3-propanedione(Ia-c) reacts with sulphuryl chloride in dioxane to give 3-chloro-2-(2’-furyl)-6-chloro substituted chromone (IIa-c). (Ia-c) reacts with Br2 in dioxane to yield 3-bromo-2-(2’-furyl)-6-chloro-8-substituted chromone (IId-f). Similarly, (Ia-c) also reacts with ICl in dioxane to yield 3-iodo-2-(2’-furyl)-6-chloro-8-substituted chromone (IIg-i). (IIa-c) (IId-f) (IIg-i) reacts with ethanolic sodium hydroxide gave 2-(2’-furoyl)-5-chloro-7-substituted coumaran-3-one (IIIa-c). The structures of the newly synthesized compounds were confirmed on the basis of chemical, *elemental analyses and spectral data.
