作者:Koichi Tanaka、Hiroko Aoki、Hiroyuki Hosomi、Shigeru Ohba
DOI:10.1021/ol006038y
日期:2000.7.1
[GRAPHICS]p-TsOH catalyzed condensation reactions of 1,1-diaryl-2 propyn-1-ol (1) and 2-naphthol (2) in the solid state gave 3,3-diaryl-3H-naphtho[2,1-b]pyran (6) via Claisen rearrangement. Similar reactions of 1 with 2,6- (7) and 2,7-dihydroxynaphthalenes (8) afforded naphthodipyrane derivatives 9 and 10, respectively. Bis-naphthopyran derivatives 12 were also obtained by the reaction of 1,1,6,6-tetraaryl-2,5-hexadiyn-1,6 diol (II) and 2-naphthol (2) in the solid state.