4271-19-6Relevant academic research and scientific papers
Radical addition-coupling polymerization with various nitroso compounds
Li, Junjie,Wang, Qi
, p. 810 - 815 (2014/03/21)
Four nitroso esters were prepared by oxidation of 4,4-dimethyl dihydro-1,3-oxazine or 4,4-dimethyl-2-oxazoline with two equiv of m-chloroperoxybenzoic acid. All of them can be applied in radical addition-coupling polymerization to produce periodic polymer together with introduction of ester group at side chain. Compared with 2-methyl-2- nitrosopropane, 2-nitroso-2-methyl-4-acetoxypentane and 2-methyl-2-nitrosopropyl hexanoate present good stability at high temperature up to 70°C and can result polymer with high molecular weight.
Generation of cyclic ketene-N,X-acetals (X = O, S) from 2-alkyl-1,3-oxazolines and 2-alkyl-1,3-thiazolines. Reactions with acid chlorides, 1,3-diacid chlorides and N-(chlorocarbonyl) isocyanate
Zhou, Aihua,Pittman Jr., Charles U.
, p. 37 - 48 (2007/10/03)
2-Alkyl-1,3-oxazolines, 2-alkyl-1,3-thiazolines, and the corresponding cyclic ketene-N,X-acetals (X = O, S) derived from them were reacted with monoacid chlorides, diacid chlorides, triacid chlorides. A series of these carbon-carbon bond-forming reactions and cyclizations to both substituted 2,3-dihydrooxazolo[3,2-a]pyridine-5,7-diones and 2,3-dihydrothiazolo[3,2-a] pyridine-5,7-diones proceeded under mild reaction conditions. Cyclic ketene-N,X-acetal intermediates play important roles in all these reactions. Related cyclizations with N-(chlorocarbonyl) isocyanate formed substituted 2,3-dihydrooxazolo[3,2-c]pyrimidine-5,7-diones and 2,3-dihydrothiazolo[3,2-c] pyrimidine-5,7-diones. Georg Thieme Verlag Stuttgart.
Direct synthesis of 2-oxazolines from carboxylic acids using 2-chloro-4,6-dimethoxy-1,3,5-triazine under mild conditions
Bandgar,Pandit
, p. 2331 - 2333 (2007/10/03)
2-Acyloxy-4,6-dimethoxy-1,3,5-triazines obtained from carboxylic acids and 2-chloro-4,6-dimethoxy-1,3,5-triazine were subsequently treated with 2-amino-2-methyl-1-propanol to afford the corresponding 2-oxazolines in excellent yield at room temperature.
SYNTHESIS OF ISOTHIOCYANATES FROM NON-AROMATIC NITROGEN-CONTAINING HETEROCYCLES
Gonda, Jozef,Kristian, Pavol,Mikler, Lubomir
, p. 112 - 117 (2007/10/02)
Investigation of the reaction of thiophosgene with Δ2-oxazolines I, Δ3-thiazolines II, 4H-benzothiazines III, 2-methoxypentahydro-Δ1-azepine IV, theophylline and caffeine showed that only compounds I and IV reacted to give 2-acyloxyethyl isothiocyanates and methyl 6-isothiocyanatohexanoate.The structure of these products was corroborated by IR, 1H NMR, 13C NMR and mass spectral methods.The suitability of the above-mentioned compounds to react is discussed.
New Synthesis of 2-Substituted 2-Oxazolines: Transition-Metal-Catalyzed Cross-Coupling of Grignards with 2-(Methylthio)-4,4-dimethyl-2-oxazoline
Pridgen, Lendon N.,Killmer, Lewis B.
, p. 5402 - 5404 (2007/10/02)
A new synthesis of 2-aryl-4,4-dimethyl-2-oxazolines (18a-e) using nickel- and palladium-phosphine complexes to catalyze cross-coupling of Grignard reagents 17 with 2-(methylthio)-4,4-dimethyl-2-oxazoline (16) is described.This reaction represents the firs
