Results 311 to 320 of about 17,768 (339)

New functionalized pyrrolidines

Russian Journal of Organic Chemistry, 2017
New functionalized pyrrolidines have been synthesized from accessible amino acids by the [C+NC+CC]-coupling reaction.
M. F. Abdullin, Mansur S. Miftakhov, V. A. Egorov, A. M. Galeeva, Fanuza A. Gimalova, L. S. Khasanova   +5 more
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Pyrrolidine analogues of nucleosides and nucleotides

Nucleic Acids Symposium Series, 2008
Among the structurally diverse nucleoside phosphonic acids, several compounds possessing strong antiviral properties have been found. Our effort in this area was focused to the synthesis of novel compounds - pyrrolidine-based nucleoside phosphonic acids and their derivatives.
Libor Krásný, Ivan Rosenberg, Hana Šanderová, Soňa Kovačková, Petr Kočalka, Dominik Rejman, Radek Pohl, Alžběta Švenková   +7 more
openaire   +3 more sources

Synthesis of 3-substituted pyrrolidines

Chemistry of Heterocyclic Compounds, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Marina A. Yurovskaya, Alexander V. Kurkin, E. A. Sumtsova   +2 more
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Pyrroles, pyrrolines and pyrrolidines

1991
Publisher Summary This chapter presents a review of pyrrole chemistry. It presents a description of the syntheses and reactions of monocyclic compounds, which includes annulation reactions, dipyrroles, dipyrrolylmethanes, pyrrole polymers. Intermediate pyrrole in synthetic routes to pyrrolizidine alkaloids and porphyrins are briefly discussed ...
Asmita V. Patel, Trevor A. Crabb
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Dual Role of Pyrrolidine and Cooperative Pyrrolidine/Pyrrolidinium Effect in Nitrone Formation

ACS Catalysis, 2015
The formation of nitrones by direct condensation between equimolecular amounts of N-substituted hydroxylamine hydrochlorides and aromatic or aliphatic aldehydes is efficiently promoted by pyrrolidine in a matter of minutes under very mild conditions in almost quantitative yields after a simple filtration through a short pad of silica gel.
Fernando G. Guijarro, Sara Morales, José L. García Ruano, M. Belén Cid, Inés Alonso   +4 more
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Synthesis of pyrrolidine-2–14C

Journal of Pharmaceutical Sciences, 1967
The preparation of pyrrolidine-2– 14 C picrate in satisfactory yields from potassium cyanide- 14 C and from barium carbonate- 14 C is reported. Reaction of pyrrolidine picrate with lithium hydroxide followed by distillation separated the free base.
Wayne V. Kessler, John E. Christian, John M. Walts   +2 more
openaire   +3 more sources

Pyrrolidines as Chiral Auxiliaries

2019
Despite the fact that various enantioselective catalytic reactions are available for many important stereoselective reactions, diastereoselective auxiliary-controlled synthesis is still an important area of organic synthesis. Chiral pyrrolidine auxiliaries are frequently used in this context, due to good availability and efficient transfer of chirality
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Conformation of pyrrolidine ring in pyrrolidine nucleotide analogues

Collection Symposium Series, 2008
Ivan Rosenberg, Miloš Buděšínský, Dominik Rejman, Radek Pohl, Petr Kočalka   +4 more
openaire   +2 more sources

ChemInform Abstract: Bridging with Pyrrolidines.

ChemInform, 1993
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
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Determination of pyrrolidine and piperidine

Analytical Biochemistry, 1964
Conrad G. Honegger, Helen Langemann
openaire   +3 more sources