T. Jojima, H. Takeshiba, T. Kinoto
Jul 25, 1976
Citations
0
Influential Citations
9
Citations
Journal
Chemical & Pharmaceutical Bulletin
Abstract
Intramolecular cycloaddition of 3-phenyl-6-(2-allylphenoxy) pyridazines afforded 2-phenyl-1, 9a-dihydroxanthenes, while 3-methyl-6-(2-allylphenoxy)-, and 3-(2-allylphenoxy) pyridazines gave mixtures of dihydroxanthenes. Depending upon condition, 3-chloro-6-(2-allyl-4-alkoxycarbonylphenoxy) pyridazines gave rise to the corresponding 1, 9a-, and 1, 4-dihydroxanthenes along with 2-alkoxycarbonylxanthenes.