Two DMAP-based flexible polymernetworks TPB-DMAP and TPA-DMAP have been successfully synthesized via palladium catalyzed Heck cross-coupling. The structures of these polymers were confirmed by solid state 13C CP/MAS and Fourier transform infrared spectroscopy (FTIR). Although both polymers have negligible surface areas, they exhibit excellent catalytic efficiency for the acylation of 1-phenylethanol
通过钯催化的Heck交叉偶联已成功合成了两个基于DMAP的柔性聚合物网络TPB-DMAP和TPA-DMAP。这些聚合物的结构通过固态13 C CP / MAS和傅立叶变换红外光谱(FTIR)进行了确认。尽管两种聚合物的表面积均可以忽略不计,但由于它们具有良好的溶胀能力,因此它们对于1-苯基乙醇与乙酸酐的酰化反应具有极好的催化效率。用作典型催化剂的聚合物TPA-DMAP具有高活性,可将各种醇酰化为相应的酯。此外,该催化剂可以循环至少十次而不会明显损失催化活性。
Scandium Trifluoromethanesulfonate as an Extremely Active Acylation Catalyst
The present disclosure provides methods of increasing skin pigmentation in a subject in need thereof using salt-inducible kinase (SIK) inhibitors, such as macrocyclic compounds of Formula (I), bicyclic urea compounds of Formula (II), (III), and (IV), and compounds of Formula (V), (VI), (VI-A), or (VII). Also provided are pharmaceutical compositions, methods, and uses that include or involve a compound described herein.