Results 21 to 30 of about 861 (190)
REACTIONS OF 5-ARYLOXAZOLIDINES AND THEIR DERIVATIVES WITH NUCLEOPHILES [PDF]
, 2022 Compounds 5‒7 were obtained with financial support from the Russian Science Foundation (grant no. 22-73-10008)
Buev, E. M. +3 more
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Angewandte Chemie, Volume 136, Issue 42, October 14, 2024.Progress in the development of non‐alternant nanographenes containing N‐doped non‐hexagonal pairs, including N‐doped pentagon‐heptagon (5–7) pairs, N‐doped pentagon‐octagon (5–8) pairs and N‐doped heptagon‐heptagon (7–7) pairs, is comprehensively covered in this review.
Huan Luo, Junzhi Liu
wiley +2 more sources
Tert-Amino effect: The Meth-Cohn and Reinhoudt reactions (Review) [PDF]
, 2013 The data published over the last 15-20 years on reactions taking place by the tert-amino effect mechanism have been reviewed.
Glukhareva, T. V. +3 more
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When indoles meet allene and its derivatives [PDF]
, 2020 The allene functional group and the indole ring have emerged as recurring building blocks in organic chemistry due to their diverse reactivity and straightforward preparation. In addition, the biological properties and natural occurrence of indole give a
Alonso Gomez, José M. +1 more
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Chemistry – A European Journal, Volume 25, Issue 65, Page 14912-14920, November 22, 2019., 2019 Expanding rings: A sequence of aryl amination of α‐(iodophenyl)‐β‐oxoesters followed by ring transformation is the key to accessing hexahydrobenzo[b]azocin‐2‐on‐6‐carboxylic esters. Abstract Transformation of β‐oxoesters with PhI(OCOCF3)2 leads to α‐(ortho‐iodophenyl)‐β‐oxoesters.
Anna Dierks +3 more
wiley +1 more source
Design of new anti-Alzheimer drugs: ring-expansion synthesis and synchrotron X-ray diffraction study of dimethyl 4-ethyl-11-fluoro-1,4,5,6,7,8-hexahydroazonino[5,6-b]indole-2,3-dicarboxylate [PDF]
, 2018 The title compound, C20H23FN2O4, is the product of a ring-expansion reaction from a seven-membered fluorinated hexahydroazepine to a nine-membered azonine. The nine-membered azonine ring of the molecule adopts achair–boatconformation.
Alexey N. Bilyachenko +6 more
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18F‐Labeling Using Click Cycloadditions
BioMed Research International, Volume 2014, Issue 1, 2014., 2014 Due to expanding applications of positron emission tomography (PET) there is a demand for developing new techniques to introduce fluorine‐18 (t1/2 = 109.8 min). Considering that most novel PET tracers are sensitive biomolecules and that direct introduction of fluorine‐18 often needs harsh conditions, the insertion of 18F in those molecules poses an ...
Kathrin Kettenbach +3 more
wiley +1 more source
Four-membered ring systems [PDF]
, 2010 Capítulo 4, pp 85-107The search in the field of four-membered heterocycles, where a non-carbon atom is part of the ring, has been actively pursued in 2009 within Organic Chemistry, Inorganic Chemistry, Medicinal Chemistry, and Material Science.
Alcaide, Benito, Almendros, Pedro
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Modifications of Prenyl Side Chains in Natural Product Biosynthesis
Angewandte Chemie International Edition, Volume 63, Issue 52, December 20, 2024.This review summarizes the unique modifications of prenyl side chains involved in natural product biosynthesis, including epoxidation, dehydrogenation, oxidation of methyl groups to carboxyl groups, C−C bond cleavage and oxidative cyclization. Abstract In recent years, there has been a growing interest in understanding the enzymatic machinery ...
Huibin Wang, Yi Yang, Ikuro Abe
wiley +1 more source
A terc-amino effektus vizsgálata és kiterjesztése: új típusú, biológiailag aktív policiklusos vegyületek előállítása = The study and the extension of the tert-amino effect: Synthesis of new types of polycyclic compounds with biological activities [PDF]
, 2013 1. Vizsgáltuk a terc-amino effektus 2. típusának kiterjesztését a reakcióban résztvevő vinil és terc-amino csoportot két külön gyűrűn tartalmazó (kondenzált) bi- és triaril - bifenil/fenilpiridazin, trifenil/difenilpiridazin, naftalin illetve ...
Balogh, Balázs +8 more
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