219584

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Showing 1-9 of 9 results for "219584" within Papers

Enantioselective organocatalytic singly occupied molecular orbital activation: the enantioselective alpha-enolation of aldehydes.

Hye-Young Jang et al.

Journal of the American Chemical Society, 129(22), 7004-7005 (2007-05-15)

Caffeine and glucosamine mobility shifts by adduction with 2-butanol depended on interaction energy, charge delocalization, and steric hindrance in ion mobility spectrometry.

Dairo Meza-Morelos et al.

Journal of mass spectrometry : JMS, 52(12), 823-829 (2017-09-07)

Ion mobility spectrometry (IMS) is an analytical technique that separates gas-phase ions drifting under an electric field according to their size to charge ratio. We used electrospray ionization-drift tube IMS coupled to quadrupole mass spectrometry to measure the mobilities of

Cationic Copolymerization of Isobutylene with 4-Vinylbenzenecyclobutylene: Characteristics and Mechanisms.

Zhifei Chen et al.

Polymers, 12(1) (2020-01-17)

A random copolymer of isobutylene (IB) and 4-vinylbenzenecyclobutylene (4-VBCB) was synthesized by cationic polymerization at -80 °C using 2-chloro-2,4,4-trimethylpentane (TMPCl) as initiator. The laws of copolymerization were investigated by changing the feed quantities of 4-VBCB. The molecular weight of the

Living carbocationic polymerization of isobutylene with blocked bifunctional initiators in the presence of di-tert-butylpyridine as a proton trap.

Gyor M, et al.

J. Macromol. Sci., Pure Appl. Chem., 29(8), 639-653 (1992)

Operando Study Reveals the Superior Cracking Activity and Stability of Hierarchical ZSM-5 Catalyst for the Cracking of Low-Density Polyethylene.

Karolina A Tarach et al.

ChemSusChem, 12(3), 633-638 (2018-12-07)

A new theoretical and practical framework has been developed through operando study of the zeolite catalytic cracking of low-density polyethylene (as a model reaction) under reaction conditions. Results show that microporous ZSM-5 gives rise to less cracking products. Hierarchical ZSM-5

Reactions of crowded molecules under high pressure. Reactions of 2, 6-di-tert-butylpyridine with methyl iodide and methyl fluorosulfonate under high pressure.

Okamoto Y and Lee KI.

Journal of the American Chemical Society, 97(!4), 4015-4018 (1975)

J. Macromol. Sci., Pure Appl. Chem., A29, 639-639 (1992)

Using Voltammetry to Measure the Relative Hydrogen-Bonding Strengths of Pyridine and Its Derivatives in Acetonitrile.

Malcolm E Tessensohn et al.

Chemphyschem : a European journal of chemical physics and physical chemistry, 18(16), 2250-2257 (2017-06-14)

The voltammetric behavior of 2,3,5,6-tetramethyl-1,4-phenylenediamine was found to be able to differentiate the hydrogen acceptor abilities of electroinactive pyridine compounds in acetonitrile. Weak and strong hydrogen acceptors were distinguished through the onset of a third oxidation process that came about

Disproportionation of Iron(III) Porphyrin pi-Cation Radicals in the Presence of Sterically Hindered Pyridines. Spectroscopic Detection of Asymmetric Highly Oxidized Intermediates.

Krystyna Rachlewicz et al.

Inorganic chemistry, 35(5), 1136-1147 (1996-02-28)

The reactivity of iron(III) tetraphenylporphyrin pi-cation radical (TPP(*))Fe(III)(ClO(4))(2), (1-1) iron(III) tetra-p-tolylporphyrin pi-cation radical (TTP(*))Fe(III)(ClO(4))(2) (1-2) and iron(III) tetramesitylporphyrin pi-cation radical (TMP(*))Fe(III)(ClO(4))(2) (1-3) complexes with 2,4,6-collidine, 2,3,6-collidine, 2-picoline, 2,6-di-tert-butylpyridine, and 2,6-dibromopyridine has been examined by (1)H NMR spectroscopy in dichloromethane-d(2) solution

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