Deoxycyanamidation of Alcohols with N-Cyano-N-phenyl-p-methylbenzenesulfonamide (NCTS)
摘要:
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.
The cross-coupling of alkyl cyanamides with a number of aryl, heteroaryl, and vinylhalide and pseudohalide coupling partners has been developed via a modification of Pd-catalyzed amidation methods. The reactions proceed selectively under mild conditions with reasonable reaction times in moderate to excellent yields.