Add time:07/17/2019 Source:sciencedirect.com
An organocatalyzed direct Michael addition of unsubstituted/substituted malonates, acetoacetate, or acetylacetones to conjugated nitrodienes using a cinchona alkaloid-based thiourea catalyst is disclosed. The addition products were formed in high yields and regioselectivity. The enantioselectivities of the addition products were high in most cases and could significantly be improved upon by a single recrystallization. The addition products easily undergo chemoselective nitro group reduction and subsequent lactamization with a high synthetic potential.
We also recommend Trading Suppliers and Manufacturers of DIETHYL 2-(([1-(4-CHLOROPHENYL)-3-METHYL-1H-PYRAZOL-5-YL]AMINO)METHYLENE)MALONATE (cas 956574-60-0). Pls Click Website Link as below: cas 956574-60-0 suppliers
About|Contact|Cas|Product Name|Molecular|Country|Encyclopedia
Message|New Cas|MSDS|Service|Advertisement|CAS DataBase|Article Data|Manufacturers | Chemical Catalog
©2008 LookChem.com,License: ICP
NO.:Zhejiang16009103
complaints:service@lookchem.com Desktop View