2091-46-5Relevant articles and documents
An Elegant Synthesis of a New Class of 1-(Substituted)-1H-1,2,3-triazol-4-yl)methyl)diphenylphosphineoxides by Microwave Irradiation
Chinthaparthi, Radha Rani,Gangireddy, Chandra Sekhar Reddy,Kandula, Madhu Kumar Reddy,Balam, Satheesh Krishna,Cirandur, Suresh Reddy
, p. 1876 - 1882 (2015/11/09)
A simple and efficient one-pot microwave-assisted click formation of 1-(substituted)-1H-1,2,3-triazol-4-yl)methyl)diphenylphosphineoxide derivatives via Huisgen regioselective [3+2]-cycloaddition of an in situ generated organic azides and diphenyl(prop-2-yn-1-yl)phosphine oxide in highly polar DMSO-H2O medium. This synthetic protocol is mild, requires shorter reaction time, and afforded products in excellent yields with high regioselectivity.
Synthesis of chlorophyll-a homologs by Wittig and Knoevenagel reactions with methyl pyropheophorbide-d
Tamiaki, Hitoshi,Kouraba, Mitsuru
, p. 10677 - 10688 (2007/10/03)
The formyl group at the 3-position of methyl pyropheophorbide-d reacted with phosphorous ylides and activated methylene compounds to give efficiently the corresponding 3-(2-substituted ethenyl)chlorins compounds as a product of Wittig and Knoevenagel reactions. The trans-isomers of the synthetic chlorins, methyl 32-substituted pyropheophorbide-a had visible bands absorbing longer wavelengths than the cis-isomers and the 32-unsubstituted chlorin, methyl pyropheophorbide-a. 32,32-Disubstitution strongly affected the absorption bands compared with the bands of the 32-monosubstituted chlorins. The absorption, fluorescence and circular dichroism spectra were dependent upon the 3-substituents conjugated with the chlorin chromophore.
