A general and efficient protocol for the palladium‐catalyzed functionalization of mono‐ and polyglycosyl thiols by using the palladacycle precatalyst G3‐XantPhos was developed. The CS bond‐forming reaction was achieved rapidly at room temperature with various functionalized (hetero)aryl‐, alkenyl‐, and alkynyl halides. The functional group tolerance on the electrophilic partner is typically high and
通过使用Palladacycle预催化剂G3-XantPhos,开发了一种通用且有效的协议,用于
钯催化的
单糖基和聚糖基
硫醇官能化。与c S键形成反应,在室温下用各种官能化(杂)芳基- ,链烯基,和炔基卤化物快速地实现。在所研究的所有情况下,对亲电子体的官能团耐受性通常都很高,并且
硫代糖苷的端基异构体选择性也很高。新的
硫亲核试剂,如
硫酚,烷基
硫醇和
硫代
氨基酸(半胱
氨酸)也已成功偶联,从而导致了迄今报道的最通用和最实用的
硫醇官能化方法。