Organic Reactions Catalyzed by Methylrhenium Trioxide: Reactions of Ethyl Diazoacetate and Organic Azides
作者:Zuolin Zhu、James H. Espenson
DOI:10.1021/ja954039t
日期:1996.1.1
para position of phenols favors the formation of α-phenoxy ethyl acetates. The use of EDA to form α-thio ethyl acetates and N-substituted glycine ethyl esters, on the other hand, is hardly affected by the size or structure of the parent thiol or amine, with all of these reactions proceeding in high yield. MTO-catalyzed cycloaddition reactions occur between EDA and aromatic imines, olefins, and carbonyl
Metal‐Free Ring Opening Cyclization of Cyclopropane Carbaldehydes and
<i>N</i>
‐Benzyl Anilines: An Eco‐Friendly Access to Functionalized Benzo[
<i>b</i>
]azepine Derivatives
作者:Raghunath Dey、Prabal Banerjee
DOI:10.1002/adsc.201801714
日期:2019.6.18
Herein, we report a p‐toluenesulfonic acid (PTSA) initiated mild and user‐friendly ring opening/domino ring opening cyclization reaction (depends on substituent present in N‐benzyl aniline) of cyclopropane carbaldehyde and N‐benzyl aniline towards the formation of substituted 4‐amino butanal/2,3‐dihydro‐1H‐benzo[b]azepine. The product dihydro‐1H‐benzo[b]azepine was also converted into the corresponding
在此,我们报道了对丙烷磺酸和环丙烷苯甲醛与N-苄基苯胺的对甲苯磺酸(PTSA)引发的温和且用户友好的开环/多米诺环开环反应(取决于N-苄基苯胺中存在的取代基) 4-氨基丁醛/ 2,3-二氢-1 H-苯并[ b ]氮杂。产物二氢-1 H-苯并[ b ]氮杂也被转化为相应的四氢-1 H-苯并[ b ]氮杂。
Regioselective Brønsted Acid-Catalyzed Annulation of Cyclopropane Aldehydes with <i>N</i>′-Aryl Anthranil Hydrazides: Domino Construction of Tetrahydropyrrolo[1,2-<i>a</i>]quinazolin-5(1<i>H</i>)ones
作者:Priyanka Singh、Navpreet Kaur、Prabal Banerjee
DOI:10.1021/acs.joc.9b03170
日期:2020.3.6
synthesis of tetrahydropyrrolo[1,2-a]quinazolin-5(1H)one derivatives was achieved by reacting cyclopropane aldehydes with N'-aryl anthranil hydrazides in the presence of p-toluene sulfonic acid (PTSA). The transformation involves domino imine formation and intramolecular cyclization to form 2-arylcyclopropyl-2,3-dihydroquinolin-4(1H)-one, followed by nucleophilic ring opening of the cyclopropyl ring to form
Novel succinate derivative compounds useful as cysteine protease inhibitors
申请人:——
公开号:US20010041700A1
公开(公告)日:2001-11-15
Disclosed are novel succinate derivative compounds of the formula (I)/(Ia):
1
wherein R1, R2, R3, R4, R5, R6, R7, X and A are defined herein. The compounds are useful as inhibitors of cysteine proteases. Also disclosed are methods of using and methods of making such compounds.
The first synthesis of nitro-substituted cyclopropanes and spiropentanes via oxidation of the corresponding amino derivatives
作者:Yuliya A. Volkova、Olga A. Ivanova、Ekaterina M. Budynina、Eugene V. Revunov、Elena B. Averina
DOI:10.1016/j.tetlet.2009.03.165
日期:2009.6
A novel approach to nitro-substituted cyclopropanes and spiropentanes via oxidation of the corresponding amines with dimethyldioxirane is reported. The method is used successfully for the preparation of a series of nitrocyclopropanes as well as for the first synthesis of 1,4-dinitrospiro[2.2]pentane.