both nucleophilic and electrophilic centers, and their arylation reactions are known to proceed at N(sp3) and C(sp) sites, leading to N-aryl cyanamides or amidines. N(sp) selectivity has also been reported only in the presence of amines, thus leading to guanidines. Herein, we report a general copper-catalyzed ligand-controlled Chan-Lam-Evans arylation of cyanamides proceeding regioselectively at the N(sp3)
The present invention relates to novel 1-aryl-imidazol-4-yl thiols derivatives, in particular to 1-aryl-4-mercaptoimidazoles N-carbonyl anilines which are intermediates for the preparation of pesticidal 1-aryl imidazoles and to processes for making them.
Deoxycyanamidation of Alcohols with <i>N</i>-Cyano-<i>N</i>-phenyl-<i>p</i>-methylbenzenesulfonamide (NCTS)
作者:James N. Ayres、Matthew W. Ashford、Yannick Stöckl、Vassili Prudhomme、Kenneth B. Ling、James A. Platts、Louis C. Morrill
DOI:10.1021/acs.orglett.7b01710
日期:2017.7.21
The first one-pot deoxftyanamidation,of alcohols has been developed using N-cyano-N-phenyl-p-methylbenzenesulfonamide (NCTS) as both a sulfonyl transfer reagent and a cyanamide source, accessing a diveite range of tertiary,cyanamides in excellent isolated yields. ThiS approach exploits the underdeveloped desulfonylative (N-S bond cleavage) reactivity pathway of NCTS, which is more Commonly employed for electrophilic C- and N-cyanation processes.