New Advances in Chemical Research, May 2021.Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. 107-97-1, Name is Sarcosine, molecular formula is C3H7NO2, belongs to pyrrolines compound, is a common compound. In a patnet, author is Nori, Valeria, once mentioned the new application about 107-97-1, Recommanded Product: 107-97-1.
Triarylborane catalysed N-alkylation of amines with aryl esters
The ability of halogenated triarylboranes to accept a lone pair of electrons from donor substrates renders them excellent Lewis acids which can be exploited as a powerful tool in organic synthesis. Tris(pentafluorophenyl)borane has successfully demonstrated its ability to act as a metal-free catalyst for an ever-increasing range of organic transformations. Herein we report the N-alkylation reactions of a wide variety of amine substrates including diarylamines, N-methylphenyl amines, and carbazoles with aryl esters using catalytic amounts of B(C6F5)(3). This mild reaction protocol gives access to N-alkylated products (35 examples) in good to excellent yields (up to 95%). The construction of a C-N bond at the propargylic position has also been demonstrated to yield synthetically useful propargyl amines. On the other hand, unsubstituted 1H-indoles and 1H-pyrroles at the C3/C2 positions afforded exclusively C-C coupled products. Extensive DFT studies have been employed to understand the mechanism for this transformation.
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Reference:
Pyrroline – Wikipedia,
,1-Pyrroline | C4H7N – PubChem