Stability of cycloadducts obtained by high-pressure Diels-Alder reaction between 3,4-dimethoxyfuran and 1,4-benzoquinones: kinetic studies of retro-Diels-Alder reaction

1985 ◽  
Vol 50 (7) ◽  
pp. 1106-1107 ◽  
Author(s):  
Janusz Jurczak ◽  
Andrzej L. Kawczynski ◽  
Tomasz Kozluk
1984 ◽  
Vol 13 (10) ◽  
pp. 1855-1858 ◽  
Author(s):  
Hitoshi Takeshita ◽  
Shigeru Sugiyama ◽  
Toshihide Hatsui

2015 ◽  
Vol 11 ◽  
pp. 576-582 ◽  
Author(s):  
Grzegorz Mlostoń ◽  
Paulina Grzelak ◽  
Maciej Mikina ◽  
Anthony Linden ◽  
Heinz Heimgartner

Selected hetaryl and aryl thioketones react with acetylenecarboxylates under thermal conditions in the presence of LiClO4 or, alternatively, under high-pressure conditions (5 kbar) at room temperature yielding thiopyran derivatives. The hetero-Diels–Alder reaction occurs in a chemo- and regioselective manner. The initially formed [4 + 2] cycloadducts rearrange via a 1,3-hydrogen shift sequence to give the final products. The latter were smoothly oxidized by treatment with mCPBA to the corresponding sulfones.


1980 ◽  
Vol 102 (22) ◽  
pp. 6893-6894 ◽  
Author(s):  
William G. Dauben ◽  
Carl R. Kessel ◽  
Kazuo H. Takemura

ChemInform ◽  
1989 ◽  
Vol 20 (14) ◽  
Author(s):  
L. M. HARWOOD ◽  
S. A. LEEMING ◽  
N. S. ISAACS ◽  
G. JONES ◽  
J. PICKARD ◽  
...  

Tetrahedron ◽  
1994 ◽  
Vol 50 (23) ◽  
pp. 6767-6782 ◽  
Author(s):  
Brian J. McNelis ◽  
Daniel D. Sternbach ◽  
Andrew T. MacPhail

Heterocycles ◽  
1990 ◽  
Vol 30 (1) ◽  
pp. 359 ◽  
Author(s):  
Hiroshi Tomisawa ◽  
Hiroto Nakano ◽  
Hiroshi Hongo

ChemInform ◽  
2010 ◽  
Vol 33 (22) ◽  
pp. no-no
Author(s):  
Tamiko Takahashi ◽  
Yoko Yamakoshi ◽  
Kazuya Okayama ◽  
Junko Yamada ◽  
Wei-Ying Ge ◽  
...  

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