The Effect of Base and Nucleophile on the Nucleophilic Substitution of Methoxytropone Derivatives: An Easy Access to 4- and 5-Substituted Multifunctional Azulenes

2020 ◽  
Vol 85 (14) ◽  
pp. 9029-9041
Author(s):  
Neha R. Kumar ◽  
Abhijeet R. Agrawal ◽  
Aditya Choudhury ◽  
Sanjio S. Zade
Synlett ◽  
2017 ◽  
Vol 29 (04) ◽  
pp. 525-529 ◽  
Author(s):  
Sigitas Tumkevicius ◽  
Jonas Bucevicius ◽  
Maris Turks

A simple and efficient synthesis of isomeric 7-deazapurine–1,2,3-triazole conjugates with amino substituents from readily available 9-alkyl-2,6-diazido-7-deazapurines has been developed using consecutive CuAAC and regioselective nucleophilic substitution reactions of ­azido and 1,2,3-triazole groups with amines.


2010 ◽  
Vol 46 (41) ◽  
pp. 7822 ◽  
Author(s):  
Sundae Kim ◽  
Nurul Ain Bte Kamaldin ◽  
Sol Kang ◽  
Sunggak Kim

Author(s):  
Vishnu Sharma ◽  
Vijay Singh Rathore ◽  
Chandikaditya Kumawat

Software reuse can improve software quality with the reducing cost and development time. Systematic reuse plan enhances cohesion and reduces coupling for better testability and maintainability. Software reuse approach can be adopted at the highest extent if relevant software components can be easily searched, adapted and integrated into new system. Large software industries hold their own well managed component libraries containing well tested software component with the project category based classification .Access to these repositories are very limited. Software reuse is facing so many problems and still not so popular. This is due to issues of general access, efficient search and adoption of software component. This paper propose a framework which resolves all of the above issues with providing easy access to components, efficient incremental semantics based search, repository management, versioning of components.


2013 ◽  
Vol 10 (2) ◽  
pp. 159-179 ◽  
Author(s):  
Philip L. Martin

Agriculture has one of the highest shares of foreign-born and unauthorized workers among US industries; over three-fourths of hired farm workers were born abroad, usually in Mexico, and over half of all farm workers are unauthorized. Farm employers are among the few to openly acknowledge their dependence on migrant and unauthorized workers, and they oppose efforts to reduce unauthorized migration unless the government legalizes currently illegal farm workers or provides easy access to legal guest workers. The effects of migrants on agricultural competitiveness are mixed. On the one hand, wages held down by migrants keep labour-intensive commodities competitive in the short run, but the fact that most labour-intensive commodities are shipped long distances means that long-run US competitiveness may be eroded as US farmers have fewer incentives to develop labour-saving and productivity-improving methods of farming and production in lower-wage countries expands.


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