Carbocation Organocatalysis in Interrupted Povarov Reactions to cis-Fused Pyrano- and Furanobenzodihydropyrans
Tritylium cation-catalyzed interrupted Povarov reactions afforded cis-4-aminobenzodihydropyrans in excellent yields (90 %) within 10 min by low catalyst loadings (1 mol-%). A mechanism involving Lewis acidic catalysis by a carbocation was proposed and val
Liu, Jingjing,Xu, Jiaxi,Li, Zhenjiang,Huang, Yu,Wang, Haixin,Gao, Yu,Guo, Tianfo,Ouyang, Pingkai,Guo, Kai
p. 3996 - 4003
(2017/07/28)
Femtosecond fluorescence study of the substitution effect on the proton transfer in thermochromic salicylideneaniline crystals
The substitution effect on the dynamics of the proton transfer in thermochromic salicylideneanilines in the crystalline phase was investigated using femtosecond time-resolved fluorescence spectroscopy. From the deuteration effect and low-temperature measu
Sekikawa,Kobayashi,Inabe
p. 644 - 649
(2007/10/03)
1H AND 13C NMR STUDIES OF SALICYLALANILINES
Several substituted salicylanilines (I) are studied by 1H (chemical shifts) and 13C (chemical shifts and T1 relaxation times) NMR in order to obtain information on molecular geometry changes and the transmission of the electronic effects due to substituen
Saraiva, M. Emilia L.,Geraldes, Carlos F. G.,Gil, Victor M. S.
p. 163 - 170
(2007/10/02)
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