cas 5820-02-0, ethyl (2Z)-7-methyl-2-{[5-(4-methyl-2-nitrophenyl)furan-2-yl]methylidene}-5-[4-(methylsulfanyl)phenyl]-3-oxo-2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate

Articles about 5820-02-0Total 5 be found

Novel photochemical behaviour of the oximes and hydrazones of β,γ-unsaturated carbonyl compounds
A study of the photochemical reactivity of a series of β,γ-unsaturated oximes and hydrazone derivatives under triplet sensitized conditions has been carried out. The oximes 3c, 4a and 4c cyclize to the corresponding dihydroisoxazoles 5c, 6a and 6c while t
Armesto, Diego,Ramos, Ana,Ortiz, Maria J.,Horspool, William M.,Mancheno, Maria J.,Caballero, Olga,Mayoral, Elena P.
p. 1535 - 1541
(2007/10/03)

Chemically Efficient Aza-Di-?-Methane Photoreactivity with Novel Stable Derivatives of β,γ-Unsaturated Carbonyl Compounds
The syntheses of new stable derivatives of β,γ-unsaturated carbonyl compounds such as 2,2-dimethyl-4,4-diphenylbut-3-enal 6 and 3,3-dimethyl-5,5-diphenylpent-4-en-2-one 7 are described.The majority of these derivatives undergo efficient aza-di-?-methane r
Armesto, Diego,Horspool, William M.,Mancheno, Maria J.,Ortiz, Maria J.
p. 2325 - 2330
(2007/10/02)

Substitution Effects on the Aza-di-?-methane Rearrangement of Imines
The u.v. irradiation of several 1-aryl derivatives of 3,3-dimethyl-5,5-diphenyl-1-azapenta-1,4-diene has been carried out.All of them undergo the aza-di-?-methane rearrangement and yield a cyclopropylimine.The influence of substituents on the 1-aryl group has given support for the proposal that imines with a low ionization potential are less efficient at undergoing the aza-di-?-methane process than imines with a higher ionization potential.This was demonstrated in a quantitative fashion.The involvement of an electron-transfer process in the reaction is discussed.
Armesto, Diego,Horspool, William M.,Langa, Fernando,Perez-Ossorio, Rafael
p. 1039 - 1042
(2007/10/02)

The Synthesis and Photochemical Reactivity of β,γ-Unsaturated Imines. An Aza-di-?-methane Rearrangement of 1-Aza-penta-1,5-dienes.
The synthesis of imines of 2,2-dimethyl-4,4-diphenylbut-3-enal is described.The photochemical reactivity of these imines is interpreted in terms of an aza-di-?-methane process.After hydrolysis the reaction yields 2,2-dimethyl-3,3-diphenylcyclopropanecarbo
Armesto, Diego,Horspool, William M.,Martin, Juan-Antonio F.,Perez-Ossorio, Rafael
p. 631 - 649
(2007/10/02)

A NOVEL AZA-DI-?-METHANE REARRANGEMENT THE PHOTOREACTION OF 4,4-DIMETHYL-1,6,6-TRIPHENYL-2-AZA-HEXA-2,5-DIENE
The synthesis and the novel photochemical aza-di-?-methane reaction of 4,4-dimethyl-1,6,6-triphenyl-2-aza-hexa-2,5-diene are described.
Armesto, Diego,Martin, Juan Antonio F.,Perez-Ossorio, Rafael
p. 2149 - 2152
(2007/10/02)