81056-03-3Relevant academic research and scientific papers
Synthesis and properties of covalently linked di-p-benzihomoporphyrin-BODIPY conjugates
Ravikanth, Mangalampalli,Sengupta, Rima,Tiwari, Shubham
, p. 1152 - 1160 (2021/10/15)
Two mono meso-functionalized [20]di-p-benzihomoporphyrins containing p-formylphenyl and p-iodophenyl groups at meso-position respectively were synthesized by condensing one equivalent of appropriate tetrapyrrane with one equivalent of p-formyl benzaldehyde/p-iodo benzaldehyde in CH2Cl2 under mild acid catalyzed conditions. The meso-formylphenyl and meso-iodophenyl functionalized di-p-benzihomoporphyrins were used to synthesize two covalently linked di-p-benzihomoporphyrins-BODIPY conjugates. The meso-formylphenyl-functionalized di-p-benzihomoporphyrin was converted to corresponding meso-dipyrrolyl substituted di-p-benzihomoporphyrin by treating with excess pyrrole under acid catalyzed conditions. In the next step, the meso-dipyrrolyl di-p-benzihomoporphyrin was subjected to oxidation followed by BF2 complexation to afford the directly linked di-p-benzihomoporphyrin-BODIPY conjugate. The meso-iodophenyl functionalized di-p-benzihomoporphyrin was coupled with ethynyl-functionalized BODIPY under mild Pd(0) coupling condition to synthesize diphenylethyne-bridged di-p-benzihomoporphyrin-BODIPY conjugate. The two conjugates were characterized by HR-MS, NMR, absorption, electrochemical, fluorescence and DFT studies. The spectral and electrochemical studies indicated that the two constituents, di-p-benzihomoporphyrin and BODIPY units in the conjugates interact weakly and retain their individual characteristic features. DFT studies indicated a possibility of charge transfer between di-p-benzihomoporphyrin and BODIPY units in conjugates.
Regioselective Synthesis of Vinyl Halides, Vinyl Sulfones, and Alkynes: A Tandem Intermolecular Nucleophilic and Electrophilic Vinylation of Tosylhydrazones
Ojha, Devi Prasan,Prabhu, Kandikere Ramaiah
, p. 18 - 21 (2015/07/28)
A diazo species is trapped in an intermolecular fashion by two independent ion species in tandem at the carbene center to install an electrophile and a nucleophile on the same carbon. This metal-free concept, which is unprecedented, has been illustrated by regioselective synthesis of a variety of vinyl halides, vinyl sulfones, and alkyne derivatives. (Chemical Equation Presented).
SiCl4-Zn induced reductive coupling of carbonyl compounds: novel and efficient routes for one-pot syntheses of 1,2,3-triaryl-2-propen-1-ones and pinacolones at room temperature
Salama, Tarek A.,Elmorsy, Saad S.,Khalil, Abdel-Galel M.
, p. 4395 - 4398 (2008/02/03)
An unprecedented one-pot reductive trimerization of aromatic aldehydes to 1,2,3-triaryl-2-propen-1-ones as well as tandem reductive coupling-rearrangements of aryl ketones to pinacolone analogues was efficiently achieved using tetrachlorosilane-zinc at room temperature.
