硫化氢(H 2 S)的资源化利用是能源化工领域的一个重要且具有发展前景的课题。我们集团以前通过 H 2 S 转化开发的产品是硫或硫醇酸。转化H 2 S的替代方法仍然是可取的。在此,我们开发了一种绿色温和的方法来转化 H 2在叔胺官能化的质子离子液体 (PIL) 中,通过与环氧化物的加成反应将 S 转化为硫醇。反应动力学、底物范围和再生实验都已被探索。在 30°C 下通过催化负载 PIL 实现了底物的几乎定量转化。水萃取用于从反应系统中回收催化剂。据信,优异的结果,加上其操作简单性和连续重复使用催化剂的能力,使这种新方法对环境无害且具有成本效益。H 2 S 资源方法的普遍性使其具有在工业规模上应用的潜力。
TBAF-catalyzed reaction of a range of substituted epoxides with hexamethyldisilathiane smoothly affords a direct and simple access to β-mercaptoalcohols in a highly regio- and stereoselective way.
Nucleoside Derivatives as Inhibitors of Viral Polymerases
申请人:Di Francesco Maria Emilia
公开号:US20100210581A1
公开(公告)日:2010-08-19
A class of nucleoside derivatives of formula (I), as defined herein, that are useful as inhibitors of RNA-dependent RNA viral replication and in particular HCV replication, are provided. Also provided are processes for the synthesis and use of such compounds for treating or preventing HCV infection.