ChemInform Abstract: Inexpensive and Efficient Synthesis of Propargylic Substituted Active Methylene Compounds Catalyzed by FeCl3.

ChemInform ◽  
2011 ◽  
Vol 42 (29) ◽  
pp. no-no
Author(s):  
Sukhendu Maiti ◽  
Srijit Biswas ◽  
Umasish Jana
Keyword(s):  
Efficient Synthesis ◽  
Active Methylene Compounds ◽  
Active Methylene

Efficient Synthesis of Novel γ-Substituted γ-Butenolides by Lewis Acid Catalyzed Addition of Metal Enolates of Active Methylene Compounds to Mucohalic Acids

2005 ◽  
Vol 70 (15) ◽  
pp. 5890-5895 ◽  
Author(s):  
Ji Zhang ◽  
Koushik Das Sarma ◽  
Timothy T. Curran ◽  
Daniel T. Belmont ◽  
James G. Davidson
Keyword(s):  
Lewis Acid ◽  
Efficient Synthesis ◽  
Active Methylene Compounds ◽  
Acid Catalyzed ◽  
Active Methylene

A solvent free approach for Knoevenagel condensation: facile synthesis of 3-cyano and 3-carbethoxycoumarins

2014 ◽  
Vol 3 (3) ◽  
Author(s):  
Suresh Kumar
Keyword(s):  
Knoevenagel Condensation ◽  
Aromatic Aldehydes ◽  
Solvent Free ◽  
Efficient Synthesis ◽  
Facile Synthesis ◽  
Basic Alumina ◽  
Active Methylene Compounds ◽  
Active Methylene

AbstractA simple, efficient and solvent free approach for the Knoevenagel condensation has been developed which involves grinding of active methylene compounds with aromatic aldehydes over basic alumina. Using this solvent free Knoevenagel approach, a facile and efficient synthesis of 3-cyano and 3-carbethoxycoumarins has also been developed, which involves the grinding of 2-hydroxybenzaldehydes with malononitrile or ethylcyanoacetate respectively over basic alumina followed by grinding with p-toluenesulphonic acid (PTSA) in the same mortar.

scholarly journals Green and Efficient Synthesis and Characterization of Amino Chromene Derivatives with Add Alkyl Tail

2019 ◽  
Vol 9 (2S4) ◽  
pp. 252-254
Keyword(s):  
Synthesis And Characterization ◽  
Efficient Synthesis ◽  
Active Methylene Compounds ◽  
Active Methylene ◽  
Alkyl Tail

The reaction between substituted 4-hydroxybenzaldehyde, active methylene compounds and /or resorcinol yield aminochromene derivatives. Structures of these compounds were established upon the basis of IR,1HNMR,13CNMR,and MASSdata

Et3N-Promoted Tandem Cyclization of Bromomaleimides with Active Methylene Compounds: An Efficient Synthesis of cis-3,4-Dihydropyrrolidine-2,5-diones

Synlett ◽  
2019 ◽  
Vol 30 (13) ◽  
pp. 1565-1572
Author(s):  
Mengyao Li ◽  
Yinghong Zhu ◽  
Haibin Wang ◽  
Wanli Chen
Keyword(s):  
Efficient Method ◽  
Efficient Synthesis ◽  
Mild Conditions ◽  
Active Methylene Compounds ◽  
Tandem Cyclization ◽  
Active Methylene

The Et3N-promoted tandem cyclization of bromomaleimides with active methylene compounds is presented, providing an efficient method for the synthesis of cis-3,4-dihydropyrrolidine-2,5-diones in moderate to good yields under mild conditions.

Sign in / Sign up

Export Citation Format

Share Document