Abstract:The title compound, C13H10N2O7S, was solved in the orthorhombic space group Pna21. The aromatic substituents on the sulfonate group are oriented gauche to one another with a C—O—S—C torsion angle of −62.0 (3)°. The supramolecular features that contribute to the crystal lattice are offset π-π and multiple C—H⋯O interactions.
“…pathways (notably, C-O bond-cleavage and S-O bond-cleavage) have been reported [27]. To investigate the application of arylsulfonates as electrophilic partners in S N Ar reactions, we decided to take advantage of the potential high reactivity of 2,4-dinitrophenyl 4-methylbenzenesulfonate towards nucleophiles in S N Ar reactions [28]. With the sulfonate in hand, we designed our initial experiment choosing amines with different nucleophilicity in order to investigate the regioselectivity of S N Ar reactions with sulfonates.…”
The CO bond of phenol can be activated by reaction with arylsulfonyl chlorides to yield the corresponding arylsulfonates that can be used as electrophilic partners in subsequent reactions. Arylsulfonates can be conveniently synthesized from inexpensive phenol derivatives and sulfonyl chlorides. Moreover, their crystalline nature makes arylsulfonates easier than other electrophiles to purify and store over a long period of time. Although arylsulfonates are inferior to triflates in terms of electrophilicity, triflates are better leaving groups compared to sulfonates; arylsulfonates however have greater economical advantages over triflates. Facile synthesis of different arylsulfonates from various arylsulfonyl chlorides and phenol are reported. What is unique about the synthesis is that very good to excellent yields of arylsulfonates were obtained without the use of column chromatography. A more efficient purification technique was developed based on recrystallization. Using 2,4-dinitrophenyl 4-methylbenzenesulfonate and various amines, initial experiments have shown greater regioselectivity for the S N Ar products.
“…pathways (notably, C-O bond-cleavage and S-O bond-cleavage) have been reported [27]. To investigate the application of arylsulfonates as electrophilic partners in S N Ar reactions, we decided to take advantage of the potential high reactivity of 2,4-dinitrophenyl 4-methylbenzenesulfonate towards nucleophiles in S N Ar reactions [28]. With the sulfonate in hand, we designed our initial experiment choosing amines with different nucleophilicity in order to investigate the regioselectivity of S N Ar reactions with sulfonates.…”
The CO bond of phenol can be activated by reaction with arylsulfonyl chlorides to yield the corresponding arylsulfonates that can be used as electrophilic partners in subsequent reactions. Arylsulfonates can be conveniently synthesized from inexpensive phenol derivatives and sulfonyl chlorides. Moreover, their crystalline nature makes arylsulfonates easier than other electrophiles to purify and store over a long period of time. Although arylsulfonates are inferior to triflates in terms of electrophilicity, triflates are better leaving groups compared to sulfonates; arylsulfonates however have greater economical advantages over triflates. Facile synthesis of different arylsulfonates from various arylsulfonyl chlorides and phenol are reported. What is unique about the synthesis is that very good to excellent yields of arylsulfonates were obtained without the use of column chromatography. A more efficient purification technique was developed based on recrystallization. Using 2,4-dinitrophenyl 4-methylbenzenesulfonate and various amines, initial experiments have shown greater regioselectivity for the S N Ar products.
“…The basicity of the amine nucleophile and the electronic nature of the substituent on the sulfonyl moiety are responsible for the difference in regioselectivity. We have synthesized various arene-sulfonate analogues in order to investigate the factors responsible for the competition between C-O and S-O bond fission in the reaction with nitrogen nucleophiles (Atanasova et al, 2015;Cooley et al, 2015).…”
In the title compound, the two aryl rings are oriented gauche to one another, around the sulfonate S—O bond, with a dihedral angle of 72.40 (7)°. In the crystal, molecules are linked via C—Cl⋯π interactions, forming ribbons along the a-axis direction.
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