Results 51 to 60 of about 27,494 (165)

An Efficient One Pot Procedure for Preparation of Symmetrical N,N'-Disubstituted Urea from Aromatic and Aliphatic Amines and Urea under Microwave Irradiation [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2000
A phosgene-free synthesis of symmetrical N,N'-disubstituted urea by the reaction of aromatic and aliphatic primary amines and urea promoted by  microwave irradiation in the presence of a suitable energy-transfer solvent such as N-N-dimethylacetamide is ...
Mohammad S. Khajavi   +4 more
doaj  

Solvent-free and eco-friendly green protocol for N-Boc Protection of amines using picric acid as a catalyst

open access: yesTetrahedron Green Chem
We have developed an environmentally conscious green protocol to protect amine functional groups in drug discovery and the total synthesis of biologically active natural products.
Ramesha Thongolla   +5 more
doaj   +1 more source

Seasonal variation of aliphatic amines in marine sub-micrometer particles at the Cape Verde islands [PDF]

open access: yesAtmospheric Chemistry and Physics, 2009
Monomethylamine (MA), dimethylamine (DMA) and diethylamine (DEA) were detected at non-negligible concentrations in sub-micrometer particles at the Cap Verde Atmospheric Observatory (CVAO) located on the island of São Vicente in Cape Verde during algal ...
H. Herrmann   +6 more
doaj  

Interaction between pheophorbide a and primary aliphatic amines.

open access: yesТонкие химические технологии, 2008
The effect of primary aliphatic amine structure and conditions (solvent, the presence of tertiary amine) in course of its reaction with pheophorbide a and methylpheophorbide a on the yield of the final product – chlorine е6-13-alkylamide has been shown.
Е. А. Larkina   +3 more
doaj  

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