An efficient isomerization method is disclosed which allows the obtention of the useful d,l isomers of C 2 symmetrical diamines, starting from their meso isomer.
公开了一种有效的异构化方法,该方法允许从C 2 对称二胺的内消旋异构体开始获得有用的d,l异构体。
Practical and Efficient Synthesis of <i>C</i><sub>2</sub> Symmetrical Diamines with Zn/Me<sub>3</sub>SiCl
C 2 symmetrical diamines are efficiently obtained by reductive coupling of imines with the couple Zn/Me3SiCl. This high yielding method is very practical and cheap for large scale preparation.
通过 Zn/Me3SiCl 与亚胺的还原偶联,可以高效地获得 C 2 对称二胺。这种高产率方法非常实用,而且成本低廉,适合大规模制备。
METHODS FOR TREATING POST TRAUMATIC STRESS DISORDER
申请人:Brownstein Michael J.
公开号:US20130109666A1
公开(公告)日:2013-05-02
Compounds and compositions are described herein for treating post traumatic stress disorder.
本文描述了用于治疗创伤后应激障碍的化合物和组合物。
Dicarboxylic Acid Monoesters in β- and δ-Lactam Synthesis
monomethyl ester of the respective dicarboxylicacid was involved in a reaction with imines promoted by acetic anhydride at an elevated temperature. Instead of the initially expected δ-lactam products of the Castagnoli-Cushman-type reaction, medicinally important 3-amino-2-azetidinones were obtained as the result of cyclization, involving a methylene group adjacent to an acid moiety. In contrast, replacing