Stability, Kinetic, and Mechanistic Investigation of 1,8-Self-Immolative Cinnamyl Ether Spacers for Controlled Release of Phenols and Generation of Resonance and Inductively Stabilized Methides
作者:Siddharth S. Matikonda、Jessica M. Fairhall、Joel D. A. Tyndall、Sarah Hook、Allan B. Gamble
DOI:10.1021/acs.orglett.6b03695
日期:2017.2.3
respectively. The α-methyl spacer releases a phenol (pKa 7.8) with a t1/2 = 27 and 54 min. For the γ-methyl spacer, the results suggest the presence of a resonance and inductively stabilized aza-cinnamyl methide.
已经合成了三种用于笼蔽酚的肉桂醚间隔基(非甲基,α-甲基和γ-甲基),它们在生理上是稳定的。触发时,γ-甲基间隔基在水溶液和有机溶剂中的t 1/2 <30 s和<2 min时分别释放出苯酚(p K a 7.8和9.8)。α-甲基间隔基释放出苯酚(p K a 7.8),t 1/2 = 27和54分钟。对于γ-甲基间隔基,结果表明存在共振和电感稳定的氮杂肉桂酸甲酯。