Results 81 to 90 of about 10,298 (237)
Stabilization of N‐, N,N‐, N,N′‐methylated and unsubstituted simple amidine salts by multifurcated hydrogen bonds [PDF]
, 2006 Jarosław Spychała
openalex +1 more source
3-Amino-2H-azirine, Moleküle mit vielfältigen Reaktionsmöglichkeiten
CHIMIA, 1979 3-Amino-2H-azirines, cyclic three-membered amidines with an estimated ring strain of about 200 kJ/mole, undergo a variety of reactions. Thereby, each of the azirine bonds can be broken: Thermolysis leads to the rupture of the C(2),C(3)-bond, with strong
Heinz Heimgartner
doaj +1 more source
Towards the catalytic asymmetric bromination of alkenes
, 2011 This thesis relates our efforts towards the development of a general method for the catalytic asymmetric bromination of alkenes. Previous work within the group had reported the synthesis and the use of 2,6-di-[(4R,5R)-4,5-diphenyl-4,5-dihydro-1H-imidazol-
Cailleau, Thaïs, Cailleau, Thaïs
core +1 more source
Procédé de fabrication de films biodégradables et films obtenus selon ce procédé [PDF]
, 1997 L'invention a pour objet un procédé de fabrication de films biodégradables ainsi que les films biodégradables obtenus selon le procédé de l'invention. Les films de l'invention sont formés à partir d'une matière première brute d'origine végétale riche en ...
Marquié, Catherine
core
Base‐Mediated Synthesis of 1,3‐Diazaphenothiazines from 2‐Methylbenzothiazoliums, Aryl Aldehydes and Amidines [PDF]
, 2023 Baihui Liang +8 more
openalex +1 more source
Ring transformations in reactions of pyrimidine and N-alkylpyrimidinium salts with nucleophile [PDF]
Paper IOn treatment with liquid ammonia at -33°C, the quaternary pyrimidinium salts, i.e. 1-methylpyrimidinium methyl sulfate, 1,2-dimethylpyrimidinium iodide, 1,4,6-trimethyl-pyrimidinium iodide and 1,2,4,6-tetramethylpyrimidinium iodide demethylate ...
Oostveen, E.A.
core +1 more source
Beilstein Journal of Organic ChemistryA chitosan-supported CuI (CS@CuI) catalyst was developed for the synthesis of quinazolinones from 2-halobenzoic acids (including iodine and bromine) and amidines. The reaction proceeds under mild reaction conditions, demonstrating a broad substrate scope
Xuhong Zhao +6 more
doaj +1 more source
Beilstein Journal of Organic ChemistryThe Groebke–Blackburn–Bienaymé (GBB) three-component reaction, discovered in 1998, is a very efficient strategy to assemble imidazo[1,2-a]-heterocycles starting from amidines, aldehydes and isocyanides.
Cristina Martini +2 more
doaj +1 more source
6-Amidinopurines as convenient precursors to pyrimido[5,4-d]pyrimidines for sar studies on Mycobacterium tuberculosis [PDF]
, 2012 Thanks are due to University of Minho and Fundação para a Ciência e Tecnologia for financial support (project nºF-COMP-01-0124-FEDER-022716 (ref. FCT PEst-/QUI/UI0686/2011) FEDER-COMPETE, FCT-Portugal and PhD grant awarded to Ana Bacelar SRFH/BD/24959 ...
Bacelar, Ana Helena Dias +4 more
core