T. Nishiwaki, Genji Fukuhara, Tamiyoshi Takahashi
1973
Citations
0
Influential Citations
1
Citations
Journal
Journal of The Chemical Society-perkin Transactions 1
Abstract
The reaction of 4-o-nitrobenzylidene-Δ2-pyrazolin-5-ones with trialkyl phosphites is much more complicated than that of the related 4-o-nitrobenzylidene-Δ2-oxazolin-5-ones, affording dialkyl 9a-alkoxy-9,9a-dihydropyrazolo-[3,4-b]quinolin-4-ylphosphonates as the major products (7–25% yield).