13466-29-0Relevant articles and documents
Insertion and fragmentation of 2-ferrocenylmethylidene-1, 3-diketones upon their reactions with N-methylhydrazine
Klimova, Elena I.,Vazquez Lopez, Eduardo A.,Martinez Mendoza, Juan M.,Ramirez, Lena Ruiz,Alamo, Marcos Flores,Backinowsky, Leon V.
, p. 484 - 491 (2009)
(Chemical Equation Presented) Reactions of 2-ferrocenylmethylidene-1,3- diketones (1a-c) with methylhydrazine afford mainly insertion products (~40-58%), viz., 1-(N′-acyl-N′-methylhydrazino)-1-ferrocenyl-2- acylethanes (7a-d), together with lesser amounts
One-Pot Catalytic Enantioselective Synthesis of 2-Pyrazolines
Thomson, Connor J.,Barber, David M.,Dixon, Darren J.
, p. 2469 - 2473 (2019/02/01)
A scalable, one-pot, enantioselective catalytic synthesis of 2-pyrazolines from beta-substituted enones and hydrazines is described. Pivoting on a two-stage catalytic Michael addition/condensation strategy, the use of an aldehyde to generate a suitable hydrazone derivative of the hydrazine was found to be key for curtailing background reactivity and tuning the catalyst-controlled enantioselectivity. The new synthetic method is easy to perform, uses a new and readily prepared cinchona-derived bifunctional catalyst, is broad in scope, and tolerates a range of functionalities with high enantioselectivity (up to >99:1 e.r.). The significant scalability of this methodology was demonstrated with the synthesis of more than 80 grams of a pyrazoline product with 89 % catalyst recovery.
SUBSTITUTED BICYCLIC HETEROCYCLIC COMPOUNDS AS NADPH OXIDASE INHIBITORS
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Page/Page column 107-108, (2018/12/03)
The present application relates to substituted fused heteroaryl and heterocyclic compounds, useful as nicotinamide adenine dinucleotide phosphate oxidase inhibitors (NADPH oxidase inhibitors), processes for their preparation, pharmaceutical compositions comprising the compounds, and the use of the compounds or the compositions in the treatment or prevention of various diseases, conditions and/or disorders mediated by NADPH oxidase. (Formula I)
Preparation of 5-Aryl-2-Alkyltetrazoles with Aromatic Aldehydes, Alkylhydrazine, Di-tert-butyl Azodicarboxylate, and [Bis(trifluoroacetoxy)iodo]benzene
Imai, Taro,Harigae, Ryo,Moriyama, Katsuhiko,Togo, Hideo
, p. 3975 - 3980 (2016/05/24)
A variety of 5-aryl-2-methyltetrazoles and 5-aryl-2-benzyltetrazoles were directly prepared in good to moderate yields by the reaction of aromatic aldehydes with methylhydrazine and benzylhydrazine, followed by treatment with di-tert-butyl azodicarboxylate and [bis(trifluoroacetoxy)iodo]benzene in a mixture of dichloromethane and 2,2,2-trifluoroethanol at room temperature. The present method is a novel one-pot preparation of 5-aryl-2-methyltetrazoles and 5-aryl-2-benzyltetrazoles through a [2N + 2N] combination under transition metal-free and mild conditions.