One-pot synthesis of cotarnine 1-alkynyl derivatives
作者:L. Yu. Ukhin、E. N. Shepelenko、L. V. Belousova、O. S. Popova、D. V. Alekseenko
DOI:10.1007/s11172-016-1385-0
日期:2016.3
Cotarnine chloride reacts with terminal acetylenes with short-time heating in acetonitrile in the presence of the catalytic system CuI—morpholine to form cotarnine 1-alkynyl derivatives.
Carbon–carbon bond formation by intramolecular 1,4-dipolar cycloaddition: heterocyclic betaines generated in situ from amides and N-substituted amides
作者:Kevin T. Potts、Maurice O. Dery、Rudolph K. Kullnig
DOI:10.1039/c39870000840
日期:——
Reaction of benzamides and N-substituted benzamides with appropriate o-alkenyl and -alkynyl side-chains and (chlorocarbonyl)phenyl ketene gives transient anhydro-1,3-oxazinium hydroxides which readily undergo intramolecular1,4-dipolarcycloaddition; loss of CO2 from these 1:1-cycloadducts, isolable with N-substituted systems and alkenyl side-chains, gives chromeno[4,3-b]pyridin-2-ones.
苯甲酰胺和N-取代的苯甲酰胺与适当的邻-烯基和-炔基侧链以及(氯羰基)苯基乙烯酮的反应得到瞬态的脱水-1,3-恶嗪鎓氢氧化物,其容易经历分子内的1,4-偶极环加成;从这些1:1-环加合物中损失的CO 2与N-取代的体系和烯基侧链可分离,得到chromeno [4,3 - b ]吡啶-2-酮。
Basenkatalysierte Cyclisierungen von 2-(2-Propinyl)oxybenzamiden
Base Catalysed Cyclizations of 2-(2-Propynyl)oxy-benzamide Systems
2-(2-丙炔基)氧基-苯甲酰胺体系的碱催化环化反应
Cu(0) nanoparticle catalyzed efficient reductive cleavage of isoxazoline, carbonyl azide and domino cyclization in water medium
作者:Krishnanka S. Gayen、Tista Sengupta、Yasmin Saima、Adita Das、Dilip K. Maiti、Atanu Mitra
DOI:10.1039/c2gc35252d
日期:——
Small Cu(0)-nanoparticles (NPs) are fabricated utilizing CuSO4·5H2O, surfactant (SDS) and ascorbic acid in aqueous medium. Its outstanding catalytic activity under low catalyst loading is developed toward reductive cleavage of isoxazoline, carbonyl azide and domino cyclization to furnish valuable 2-hydroxy-4-keto esters, primary amides and a new class of heterocycle, 4-hydroxy-2-pyrroline-5-one.
[EN] PROPARGYLOXYBENZAMIDE DERIVATIVES<br/>[FR] DÉRIVÉS DE PROPARGYLOXYBENZAMIDE
申请人:BAYER CROPSCIENCE AG
公开号:WO2010145790A1
公开(公告)日:2010-12-23
The present invention relates to propargyloxybenzamide derivatives, their processes of preparation, their use as fungicide active agents, particularly in the form of fungicide compositions, and methods for the control of phytopathogenic fungi, notably of plants and in material protection, using these compounds or compositions.