Synthesis of Ring-Fused Oxazolo- and Pyrazoloisoquinolinones by a One-Pot Pd-Catalyzed Carboxamidation and Aldol-Type Condensation Cascade Process
作者:Gagan Chouhan、Howard Alper
DOI:10.1021/jo9010574
日期:2009.8.21
three-component cascade process is described for the synthesis of ring-fused oxazolo- and pyrazoloisoquinolinones by a one-pot carboxamidation/aldol-type condensation reaction. The cascade process involves Pd-catalyzed carboxamidation of an aryl halide/active methylene compound with oxazolidinone or pyrazolidinone, and subsequent intramolecular base-catalyzed cyclization/dehydration through an aldol-type
Die Position 5 im Oxotremorin-Gerüst: Eine zentrale Stelle für die Steuerung der Aktivität am muscarinischen Rezeptor
作者:René Amstutz、Annemarie Closse、Gernot Gmelin
DOI:10.1002/hlca.19870700827
日期:1987.12.16
Position5 at the Oxotremorine Skeleton as the Stearing Position for Activity at the Muscarinic Receptors
Oxotremorine骨架上的位置5作为毒蕈碱受体活性的固定位置
Microwave assisted synthesis of unsaturated jasmone heterocyclic analogues as new fragrant substances
作者:Anna Pawełczyk、Lucjusz Zaprutko
DOI:10.1016/j.ejmech.2008.07.028
日期:2009.7
pyrazolidinone, pyrazolone and thiazolidinone systems with 2-double or 2-triple unsaturated five-carbon side chain. The rapid, highly yielding and ecofriendly microwave assisted organic syntheses (MAOS) have been used to obtain compounds mentioned above. Odor evaluation and relationships between their structure and osmic properties for all synthesized fragrant compounds have been studied. It has been shown that
Microwave assisted synthesis of fragrant jasmone heterocyclic analogues
作者:Anna Pawełczyk、Lucjusz Zaprutko
DOI:10.1016/j.ejmech.2005.09.012
日期:2006.5
cis-Jasmone, from jasmonoid group, is an important jasmine odor fragrance compound. The syntheses of new heterocyclic analogues of jasmone were described. Five analogues of this compound were prepared under microwave irradiation and the results of the microwave assisted syntheses were compared with classical, thermally initiated reactions in solvent. Microwave reactions were carried out successfully, and reaction times were significantly reduced to a few minutes. Three of five obtained analogues, pyrrolidinone, oxazolidinone and thiazolidinone demonstrated an interesting, specific odor which was compared with floral, typical jasmine odor of jasmone. (c) 2006 Elsevier SAS. All rights reserved.
Smith, Richard F.; Dennis, Lisa A.; Ryan, William J., Journal of Heterocyclic Chemistry, 1992, vol. 29, # 1, p. 181 - 183
作者:Smith, Richard F.、Dennis, Lisa A.、Ryan, William J.、Rodriguez, George、Brophy, Keith A.