Nylon 4,I: an amorphous polyamide [PDF]
, 1984 The melt polymerization of nylon 4, I was studied, starting with nylon-salt and nylon prepolymers (ηinh=0.25). With nylon-salt only low molecular polymers were obtained, while with prepolymers the inherent viscosity could be raised to 0.77 (3h, 270°, vac.
Gaymans, R.J., Ham, A.G.J. van der
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Ethyl 1-benzyl-1,2,3,3a,4,10b-hexa-hydro-pyrrolo-[2',3':3,4]pyrrolo-[1,2-a]benzimidazole-2-carboxyl-ate. [PDF]
, 2011 The title mol-ecule, C(22)H(23)N(3)O(2), was obtained via an intra-molecular cyclo-addition of an azomethine ylide and an alkene tethered by a benzimidazole unit. The benzoimidazole unit is essentially planar, with an r.m.s.
Fettinger, James C +2 more
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Pyrrolidine nucleotide analogs with a tunable conformation
Beilstein Journal of Organic Chemistry, 2014 Conformational preferences of the pyrrolidine ring in nucleotide analogs 7–14 were investigated by means of NMR and molecular modeling. The effect of the relative configuration of hydroxy and nucleobase substituents as well as the effect of the ...
Lenka Poštová Slavětínská +2 more
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Asymmetric organocatalysis of the addition of acetone to 2-nitrostyrene using N-diphenylphosphinyl-1,2-diphenylethane-1,2-diamine (PODPEN) [PDF]
, 2010 The highly enantioselective addition of acetone to 2-nitrostyrene, using N–diphenylphosphinyl-trans-1,2-diphenylethane-1,2-diamine (PODPEN) as catalyst, is ...
A. Simon Partridge +53 more
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1-[6-Chloro-2-(phenanthren-9-yl)quinolin-4-yl]pyrrolidin-2-one
IUCrData, 2016 In the title compound, C27H19ClN2O, the quinoline system is planar, with a maximum deviation from the mean plane of 0.003 Å for the N atom. This ring makes dihedral angles of 56.64 (5) and 49.26 (2)° with phenanthrene and pyrrolidine rings, respectively.
Rajamani Raja +4 more
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Synthesis of enantiomeric polyhydroxyalkylpyrrolidines from 1,3-dipolar cycloadducts. Evaluation as inhibitors of a β-galactofuranosidase [PDF]
, 2016 Enantiomeric 2,3,4-tris(hydroxyalkyl)-5-phenylpyrrolidines have been synthesized from the major cycloadducts obtained by the 1,3-dipolar cycloaddition of sugar enones with azomethine ylides derived from natural amino acids.
Oliveira Udry, Guillermo Alejandro +3 more
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Acta Crystallographica Section E: Crystallographic Communications, 2015 In the title compound, C23H22N2O4S, the pyrrolidine ring has an envelope conformation with the spiro C atom, shared with the indoline ring system, as the flap. The mean planes of the benzothiophene and indoline ring systems are inclined to the mean plane
M. P. Savithri +4 more
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Tertiary alkylamines as nucleophiles in substitution reactions at heteroaromatic halide during the synthesis of the highly potent pirinixic acid derivative 2-(4-chloro-6-(2,3-dimethylphenylamino)pyrimidin-2-ylthio)octanoic acid (YS-121) [PDF]
, 2011 YS-121 [2-(4-chloro-6-(2,3-dimethylphenylamino)pyrimidin-2-ylthio)octanoic acid] is the result of target-oriented structural derivatization of pirinixic acid.
Gabler, Matthias +1 more
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Nickel-catalyzed transamidation of aliphatic amide derivatives. [PDF]
, 2017 Transamidation, or the conversion of one amide to another, is a long-standing challenge in organic synthesis. Although notable progress has been made in the transamidation of primary amides, the transamidation of secondary amides has remained ...
Baker, Emma L +2 more
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N-(Pyrrolidin-1-ylcarbothioyl)benzamide [PDF]
Acta Crystallographica Section E Structure Reports Online, 2011 In the title compound, C(12)H(14)N(2)OS, the pyrrolidine ring adopts an envelope conformation with the C atom at the 3-position as the flap and makes a dihedral angle of 65.80 (9)° with the benzene ring. In the crystal, N-H⋯O hydrogen bonds join c-glide related mol-ecules into chains extended along [001] that are further connected into (100) layers via
Al-Abbasi, Aisha A. +2 more
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