Results 101 to 110 of about 17,768 (339)

Fotokatalyyttinen 3-substituoitujen pyrrolidiinien N-arylointi ja vertailu perinteisiin menetelmiin [PDF]

, 2021
Photocatalytic reactions utilize energy harnessed from light for the activation of a catalyst. In photoredox catalysis, an excited photocatalyst can take part in redox reactions with a substrate. The most common photocatalysts could be divided into three
Säde, Solja
core  

Antibacterial activity of pyrrolidine dithiocarbamate [PDF]

FEMS Microbiology Letters, 2008
Pyrrolidine dithiocarbamate (PDTC), an antioxidant with a metal-chelating activity, has been used widely to inhibit the expression of inflammatory genes in vitro and in vivo. This study investigated whether PDTC has an antimicrobial activity against various bacteria.
Seon-Mi Kim, Hye-Hyang Lee, Sun-Youl Ryu, Yun-Chan Hwang, Jeong-Tae Koh, Suk-Ja Yoon, Do-Hyun Choi, Mi-Sun Kang, Ok-Su Kim, Kyu-Ho Yang, Eun-Kyoung Choi, Ho-Cheol Kang, In-Chol Kang   +12 more
openaire   +3 more sources

Mannich Reaction of Secondary Benzylzinc Reagents: Synthesis of α,β‐Disubstituted β‐Arylethylamines

Asian Journal of Organic Chemistry, EarlyView.
The organometallic Mannich multicomponent reaction (MCR) of secondary benzylzinc reagents is described. The final α,β‐disubstituted β‐arylethylamines are obtained in generally high yields. The reaction is however characterized by a general lack of diastereoselectivity. A possible explanation is provided.
Baptiste Leroux, Federico Banchini, Olivier Jackowski, Alejandro Perez‐Luna, Fabrice Chemla, Marc Presset, Erwan Le Gall   +6 more
wiley   +1 more source

Dialkyl Carbonates in the Green Synthesis of Heterocycles

Frontiers in Chemistry, 2019
This review focuses on the use of dialkyl carbonates (DACs) as green reagents and solvents for the synthesis of several 5- and 6-membered heterocycles including: tetrahydrofuran and furan systems, pyrrolidines, indolines, isoindolines, 1,4-dioxanes ...
Pietro Tundo, Pietro Tundo, Manuele Musolino, Fabio Aricò   +3 more
doaj   +1 more source

Synthesis of (−)‐8a‐epi‐Lentiginosine via Tsuji–Trost Reaction of d‐Glucose‐Derived Allylic Alcohols and Crystal Structure Analysis

Asian Journal of Organic Chemistry, EarlyView.
A facile synthetic route to (−)‐8a‐epi‐lentiginosine from d‐glucose using the Pd‐BiPhePhos catalyzed intramolecular Tsuji–Trost reaction of non−derivatized allylic alcohol as a key construction of the hydroxylated pyrrolidine ring is reported. The crystal structure of (−)‐8a‐epi‐lentiginosne showed the envelope conformation of the five‐membered ring ...
Sunisa Akkarasamiyo, Patchreenart Saparpakorn, Andreas Orthaber, Joseph S. M. Samec   +3 more
wiley   +1 more source

One-pot tandem cyclization of enantiopure asymmetric cis-2,5-disubstituted pyrrolidines: Facile access to chiral 10-heteroazatriquinanes

Beilstein Journal of Organic Chemistry, 2013
A series of chiral 10-heteroazatriquinanes were synthesized from enantiopure asymmetric cis-2,5-disubstituted pyrrolidines through a one-pot tandem cyclization procedure.
Ping-An Wang, Sheng-Yong Zhang, Henri B. Kagan   +2 more
doaj   +1 more source

Facile, Regio- and Diastereoselective Synthesis of Spiro-Pyrrolidine and Pyrrolizine Derivatives and Evaluation of Their Antiproliferative Activities

Molecules, 2014
A number of novel spiro-pyrrolidines/pyrrolizines derivatives were synthesized through [3+2]-cycloaddition of azomethine ylides with 3,5-bis[(E)-arylmethylidene]tetrahydro-4(1H)-pyridinones 2a–n.
Abdulrahman I. Almansour, Raju Suresh Kumar, Farzana Beevi, Amir Nasrolahi Shirazi, Hasnah Osman, Rusli Ismail, Tan Soo Choon, Brian Sullivan, Kellen McCaffrey, Alaa Nahhas, Keykavous Parang, Mohamed Ashraf Ali   +11 more
doaj   +1 more source

ELECTROCHEMICAL REDUCTION OF 2,2,5,5-TETRAMETHYLPYRROLINE DERIVATIVES TO CORRESPONDING PYRROLIDINES

Вестник Донского государственного технического университета, 2018
The reduction technique of 2,2,5,5-tetramethylpyrroline compounds to pyrrolidines on sodium amalgam preformed under the electrolysis of sodium hydroxide solution is described.
Irina Y. Zhukova, Igor S. Kashparov, Darya S. Garbuznyak   +2 more
doaj  

Diastereoselective aza-cope rearrangement-mannich cyclizations of conformationally mobile iminium cations [PDF]

, 2016
We have developed a Lewis-acid catalyzed, diastereoselective aza-Cope rearrangement— Mannich cyclization (ACM) to form acyl pyrrolidines from conformationally mobile substrates.
Hunt, Joshua
core   +1 more source

Zur Kenntniss des Pyrrolidins [PDF]

Berichte der deutschen chemischen Gesellschaft, 1899
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openaire   +2 more sources