Intramolecular Diels-Alder reaction of furans with allenyl ethers followed by methylthio group 1,4-rearrangement
作者:Hsien-Jen Wu、Wei-Dar Shao、Fu-Hsing Ying
DOI:10.1016/s0040-4039(00)75802-3
日期:1994.1
The base-catalyzed intramolecularDiels-Alderreactions of the furfuryl propargyl ethers 1a–1e gave compounds 6a–6e as the major product respectively, a novel reaction involving an intramolecularDiels-Alderreactionfollowed by a methylthio group 1,4-rearrangement.
Study on the reaction mechanism of the base-catalyzed intramolecular Diels-Alder reaction of furfuryl propargyl ethers
作者:Hsien-Jen Wu、Fu-Hsing Ying、Wei-Dar Shao
DOI:10.1021/jo00124a033
日期:1995.9
Marked difference in singlet-chemiexcitation efficiency between syn-anti isomers of spiro[1,2-dioxetane-3,1′-dihydroisobenzofuran] for intramolecular charge-transfer-induced decomposition
作者:Masakatsu Matsumoto、Yuka Takamido、Kana Nomura、Tamaki Shiono、Nobuko Watanabe、Hisako K. Ijuin
DOI:10.1016/j.tetlet.2008.08.024
日期:2008.10
Spiro[1,2-dioxetane-3,1'-dihydroisobenzofuran] syn-3 bearing a hydroxy group at the 6-position (as a model syn-rotamer of parent dioxetane 4 bearing a 3-hydroxyphenyl group) and its isomer anti-3 (as a model anti-rotamer of 4) were synthesized. When these spiro-dioxetanes were treated with tetrabutylammonium fluoride (TBAF) in DMSO, anti-3 emitted light with high efficiency (phi(CL)=0.41), while the respective value for syn-3 was only 1/10 for anti-3. This significant difference in phi(CL) between syn-3 and anti-3 was attributed to the difference in their singlet-chemiexcitation efficiencies. (c) 2008 Elsevier Ltd. All rights reserved.
CXXI.—Cannabis Indica resin. Part I. The constitution of nitrocannabinolactone (oxycannabin)
作者:Robert Sidney Cahn
DOI:10.1039/jr9300000986
日期:——
Bargellini; Forli-Forti, Gazzetta Chimica Italiana, 1910, vol. 40 II, p. 84