F. Bertha, J. Fetter, M. Kajtár‐Peredy
Dec 10, 1998
Citations
0
Influential Citations
13
Citations
Journal
Tetrahedron
Abstract
Abstract Carbaldehydes 1a and 1b, when treated with Lewis or Bronsted acids in non-aromatic solvents or in nitrobenzene afford dihydrochromeno[3,2-b]azet-2(1H)-ones of types 4–6 and 10. In toluene, chloro- and fluoro-benzene related compounds of types 7–9 were obtained, in the last named two solvents accompanied by pyrrolidin-2-one derivatives 11–15.