One-Pot Three-Component Barbier-Type Reaction for the Synthesis of β-Nitroamines
作者:Raquel Soengas、Artur Silva
DOI:10.1055/s-0033-1339486
日期:——
The combination of an aldehyde, bromonitromethane, and p-methoxyaniline in the presence of tin(II) chloride and titanium tetraethoxide allows a straightforward access to β-nitroamine derivatives. The use of solid paraformaldehyde results in the amino methylation of methylnitronate. On the other hand, chiral sugar-derived aldehydes furnished the corresponding nitrosugars in high yields and stereoselectivities
Synthesis, Characterization and Catalytic Application of MCM 41 Supported Phenanthrolinium Dibromide Catalyst for Aza-Michael Addition Reaction in Aqueous Medium
MCM-41 immobilized phenanthrolinium dibromide (phen-MCM-Br2) was easily prepared and applied as an efficient heterogeneous catalyst for aza-Michael addition of aromatic amines to α,β-unsaturated nitriles and nitro compounds in water. The catalyst was characterized by CHN, TGA, FT-IR, SEM, EDAX, XRD, BET, and TEM. It could be simply recovered and reused several times without significant loss of catalytic