• No results found

Synthesis of Bis-4-hydroxycoumarins via a Multi Component Reaction Using Silica Boron-sulfuric Acid Nanoparticles (SBSANs) as an Efficient Heterogeneous Solid Acid Catalyst

N/A
N/A
Protected

Academic year: 2020

Share "Synthesis of Bis-4-hydroxycoumarins via a Multi Component Reaction Using Silica Boron-sulfuric Acid Nanoparticles (SBSANs) as an Efficient Heterogeneous Solid Acid Catalyst"

Copied!
14
0
0

Loading.... (view fulltext now)

Full text

Loading

Figure

Fig. 1. The chemical structures of 4- hydroxyl coumarin derivatives with pharmaceutical and biological activities
Fig. 3. SEM image of the SBSANs catalyst.
Fig. 4. Histogram representing the size distribution of the SBSANs catalyst.
Fig. 7. The Raman spectra of A) pure silica and B) SBSANs catalyst.

References

Related documents

The potency of SNP-induced cell death was shown to be higher in Neuro-2a cells expressing recombinant Ng, as compared with Neuro-2a control cells without Ng expression in

The extreme fragmentation of the international regulatory framework and the absence of a methodology based on a fully satisfactory rational criterion, suggested the opportunity

D., Studies of hemolytic streptococcal antibodies in control groups, rheumatic fever and rheumatoid arthritis : Magnitude of antistreptolysin “0”, antifibrinolysin

Haplosomoides nigricollis Medvedev, 2000, is a primary junior homonym of Haplosomoides nigricollis Jiang, 1988 (transferred here to the genus Hoplasoma )..

GIS descriptor Data T ype Date Le gend Author Access T opograph y 1 m bare-earth DTM a of Claduègne catchment Raster 2012 Lidar campaign Sintégra géomètres Public experts 25

• The AIP:c.9T>G variant encodes for an amino acid change from aspartic acid to glutamic acid in a region of the AIP protein considered to be important for its tumour

Following the tradition of Jenny (1941), of varying one environmental variable while holding others constant, we suggest that plant growth in an unamended soil relative to that of

Pearson correlation coefficients between mean annual rainfall over the Challa–Naivasha region ( a , upper three rows) or Masoko– Malawi region ( b , lower three rows) and global SSTs