83665-78-5Relevant academic research and scientific papers
Sulphonic acid functionalized porphyrin anchored with a: Meso -substituted triazolium ionic liquid moiety: A heterogeneous photo-catalyst for metal/base free C-C cross-coupling and C-N/C-H activation using aryl chloride under visible light irradiation
Bhansali, Karan,Raut, Subodh,Barange, Shital,Bhagat, Pundlik
, p. 19690 - 19712 (2020/12/04)
We report an easy process to synthesize sulphonic acid functionalized porphyrin, anchored with a meso-substituted triazolium ionic liquid moiety (SAFPTILM) for metal/base free C-C cross-coupling and C-N/C-H activation using aryl chloride under visible light irradiation. The acid strength has been measured based on the Hammett indicator. The SAFPTILM photocatalyst comprising 18 π-conjugated electronic systems with the chromophore substituents in the meso-position can provide rapid electronic conducting channels during photocatalysis under the irradiation of visible light. It was found that SAFPTILM is an efficient photocatalyst for the Heck, Sonogashira, Buchwald, Ullmann/Fittig coupling and C-H activation of phenols with different aryl chlorides in the absence of a base/noble metal, using 5 W LED (yellow) light under ambient conditions. The photocatalyst with low band gap (1.55 eV) comprising conjugation, favors coupling reaction of unactivated aryl chlorides, by easy excitation of electrons and transfer to the conjugated benzimidazolium based phenylenediamine support delaying the recombination of photoinduced electron-hole pairs.
Aminosilanes in organic synthesis. Hydrostannation of N,N-bis(trimethylsilyl)propargylamine. Facile and selective routes to (E)-allylic amines
Corriu, R.J.P.,Bolin, G.,Moreau, J.J.E.
, p. 273 - 280 (2007/10/02)
The addition of tributyl tin hydride to N,N-bis(trimethylsilyl)propargylamine yielded E-1-tributylstannyl-3-prop-1-ene 2 in 90percent yield and 96percent stereochemical purity.The functional vinyl tin reagent 2 was shown to give short and selective access to primary allylic amines.The reactions of 2 with aryl and vinyl bromides in the presence of a palladium catalyst gave substituted E-allylic amines in high yields.The reaction of 2 with butyl lithium yielded E-γ-vinyl lithium from which selective access to E-allylic amines was obtained.Key words: silylamines / propargylamines / hydrostannation / vinyl tin / vinyl lithium / (E)-allylamines
