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Photochemical Transformations of Some 2-(5-Methylthiophen-2-yl)-3-[(naphthalen-2-yl)methoxy]-4H-chromen-4-ones Involving Type-II Process

โœ Scribed by Ramesh C. Kamboj; Dinesh Kumar; Geeta Sharma; Rita Arora


Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
111 KB
Volume
29
Category
Article
ISSN
0256-7660

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## Abstract magnified image Anhydrous zinc bromide catalysed reactions of arylidineโ€3โ€acetyl coumarins (**1aโ€c**) and 5,6โ€benzoanalogs of arylidine 3โ€acetyl coumarins (**4a,4b**) with 1,3โ€cyclohexanedione gives โ€(4โ€arylโ€5โ€oxoโ€5,6,7,8โ€tetrahydroโ€4__H__โ€chromenโ€2yl)โ€2__H__โ€chromenโ€2โ€ones (**3a, 3c**