ChemInform Abstract: An Efficient and Recyclable Thiourea-Supported Copper(I) Chloride Catalyst for Azide-Alkyne Cycloaddition Reactions.

ChemInform ◽  
2016 ◽  
Vol 47 (34) ◽  
Author(s):  
Milan Kr. Barman ◽  
Ashish Kumar Sinha ◽  
Sharanappa Nembenna
Keyword(s):  
Cycloaddition Reactions ◽  
Chloride Catalyst

An efficient and recyclable thiourea-supported copper(i) chloride catalyst for azide–alkyne cycloaddition reactions

2016 ◽  
Vol 18 (8) ◽  
pp. 2534-2541 ◽  
Author(s):  
Milan Kr. Barman ◽  
Ashish Kumar Sinha ◽  
Sharanappa Nembenna
Keyword(s):  
Chloride Complex ◽  
Cycloaddition Reactions ◽  
Efficient Catalyst ◽  
Chloride Catalyst

We have shown that an air-stable bulky thiourea-supported copper(i) chloride complex is an efficient catalyst for the synthesis of five-membered heterocycles from alkynes and azides.

Multicomponent 1,3-Dipolar Cycloaddition Reactions in the Construction of Hybrid Spiroheterocycles

2013 ◽  
Vol 17 (18) ◽  
pp. 1929-1956 ◽  
Author(s):  
Natarajan Arumugam ◽  
Raju Kumar ◽  
Abdulrahman Almansour ◽  
Subbu Perumal
Keyword(s):  
Dipolar Cycloaddition ◽  
Cycloaddition Reactions

π-Facial Selectivity in 1,3-Dipolar Cycloaddition Reactions of α-Methylidene-γ-lactone Substituted by 4-Methyl-2,6,7-trioxabicyclo[2.2.2]octan-1-yl Group in γ-Position

2002 ◽  
Vol 67 (3) ◽  
pp. 353-364 ◽  
Author(s):  
Petr Melša ◽  
Ctibor Mazal
Keyword(s):  
Double Bond ◽  
Carboxylic Acid ◽  
Nitrile Oxide ◽  
Dipolar Cycloaddition ◽  
Cycloaddition Reactions ◽  
Enantiomerically Pure ◽  
Nitrile Imine ◽  
Facial Selectivity ◽  
Excellent Selectivity

Diastereoselectivity of 1,3-dipolar cycloaddition reactions of benzyl azide, diazomethane, a nitrile oxide and a nitrile imine to α-methylidene-γ-lactone dipolarophile was effectively controlled by a bulky γ-substituent, 4-methyl-2,6,7-trioxabicyclo[2.2.2]octan-1-yl in γ-position of the dipolarophile. The dipoles added from the less hindered face of the double bond with an excellent selectivity. Enantiomerically pure dipolarophile was prepared from the easily available (S)-5-oxotetrahydrohydrofuran-2-carboxylic acid.

Sign in / Sign up

Export Citation Format

Share Document