89076-51-7Relevant academic research and scientific papers
PREPARATION AND ELECTRON TRANSFER-INDUCED cis-trans ISOMERIZATION REACTIONS OF 1-(5-NITRO-2-FURYL)-, 1-(5-NITRO-2-THIENYL)-, AND 1-(4-NITROPHENYL)-2-R ETHYLENES
Prousek, Josef,Hayden, Viktor
, p. 1675 - 1682 (2007/10/02)
Mixtures of E- and Z-isomers of 1,2-bis(5-nitro-2-furyl)ethylene (I), 1-(5-nitro-2-furyl)-2-(4-nitrophenyl)ethylene (II), 1,2-bis(4-nitrophenyl)ethylene (III), 1-(5-methoxycarbonyl-2-furyl)-2-(4-nitrophenyl)ethylene (IV), 1-(5-methoxycarbonyl-2-furyl)-2-(5-nitro-2-furyl)ethylene (V) and 1-(5-methoxycarbonyl-2-furyl)-2-(5-nitro-2-thienyl)ethylene (VI) were prepared by the Wittig reaction.These derivatives were isomerized by electron transfer-induced reactions via the radical anion in the CT-complex using aniline as electron donor at 25 deg C in the light or at 80 deg C in the dark.The starting as well as the final E:Z ratio was determined by 1H NMR spectroscopy.In all cases only the cistrans isomerization was observed.
NEW SYNTHESIS OF 2-(4-NITROPHENYL)-1-(5-NITRO-2-FURYL)ETHYLENE AND 2-(4-ETHOXYCARBONYLPHENYL)-1-(5-NITRO-2-FURYL)ETHYLENE
Hrabovsky, Jan,Kovac, Jaroslav
, p. 3130 - 3133 (2007/10/02)
(E)-2-Ar-1-(5-nitro-2-furyl)ethylenes (were Ar is O2N-C6H4- or H5C2OOC-C6H4-) were prepared by reaction of aryldiazonium salts with 3-(5-nitro-2-furyl)-2-propenoic acid or 2-bromo-1-(5-nitro-2-furyl)ethylene.Photochemical modification of Meerwein reaction
