A. Georgieva, E. Stanoeva, I. Topalova
1997
Citations
0
Influential Citations
12
Citations
Journal
Journal of Chemical Research-s
Abstract
The reaction of homophthalic anhydride 1 with N-(cinnamylidene)tritylamine 2a proceeds as a 3,4-cycloaddition to give 4-oxo-1,2,3,4-tetrahydronaphthalene-1-carboxylic acids 3, with N-(cinnamylidene)benzylamine 2b as a 1,2-cycloaddition with the predominant formation of a 1-oxo-1,2,3,4-tetrahydroisoquinoline-4-carboxylic acid, and with either 2a or cinnamaldehyde in the presence of Et 3 N with the formation of a 2-oxonaphtho[1,2-b]pyran-6-carboxylic acid.