Synthesis of azulenes by the [6 + 4] cycloadditions of 6-aminofulvenes to thiophene S,S-dioxides
作者:Stephen E. Reiter、Lee C. Dunn、K. N. Houk
DOI:10.1021/ja00454a070
日期:1977.6
........ 21 C. F u l v e n e s ................................................... 24 1. Theoretical Rationales of Periselectivity ........... 24 2. Synthesis of Arainofulvenes........................... 28 3. Reactions of A m i n o f u l v e n e s ........................... 29 II. Results and Discussion........................................ 32 A. Preparation of Thiophene Dioxides .............
Nonbenzenoid aromatic systems. X. Formation, nuclear magnetic resonance spectral identification, and reactions of both Meisenheimer type and methyleneazulenate anions
作者:Richard N. McDonald、Herbert E. Petty、N. Lee Wolfe、Joseph V. Paukstelis
DOI:10.1021/jo00927a020
日期:1974.6
Synthesis of 2-cyclopentadienylidene-2h-thiapyran by novel reductive rearrangement of a 6-thienylfulvene
作者:Takeshi Kawase、Shin-ichi Fujino、Masaji Ode
DOI:10.1016/0040-4039(91)80816-o
日期:1991.7
Treatment of 6-dimethylamino-6-(2-thienyl)fulvene with lithium naphthalene followed by quenching with water gives hitherto unknown 2-cyclopentathienylidene-2H-thiapyran in one step involving a novelrearrangement, while in contrast the corresponding furyl compound leads to 4-dimethylaminoazulene.