协同无机-有机杂化物:在本文中,我们报告了一种协同二氧化硅涂覆的磁性 Fe 3 O 4催化剂,该催化剂用富氮有机部分功能化并固定有钴金属离子 (FNP-5),用于使用叔选择性氧化醇为醛和酮-丁基氢过氧化物 (TBHP) 作为氧化剂。当前协议的显着特点包括整洁的反应条件、高 TOF 值、产品的可扩展性和低 E 因子值 (1.92)。
(NH4)2Ce(NO3)6 as an inexpensive, eco-friendly, efficient catalyst for the synthesis of 5-substituted 1-H tetrazoles from nitriles
摘要:
Ceric ammonium nitrate (CAN) is found to be a suitable, inexpensive, and effective non-toxic catalyst for a smooth (3+2) cycloaddition of organic nitriles with NaN3 to afford 5-substituted 1H-tetrazoles in excellent yields. Shorter reaction times, easy work-up, and substantial and pure product formation are the key advantages of the present method. (C) 2014 Elsevier Ltd. All rights reserved.
Pyrrolo Pyrimidines as Agents for the Inhibition of Cystein Proteases
申请人:Betschart Claudia
公开号:US20090054467A1
公开(公告)日:2009-02-26
The invention provides compounds of Formula I or a pharmaceutically acceptable salt or ester thereof wherein the symbols have meaning as defined, which are inhibitors of cathepsin K and find use pharmaceutically for treatment of diseases and medical conditions in which cathepsin K is implicated, e.g. various disorders including inflammation, rheumatoid arthritis, osteoarthritis, osteoporosis and tumors.
SUPPORTED ALKOXYLATED ORGANOTIN REACTANT, PREPARATION AND USE FOR HETEROGENEOUS-PHASE SYNTHESIS OF TETRAZOLES
申请人:UNIVERSITE DE TOURVILLE
公开号:US20140206825A1
公开(公告)日:2014-07-24
A supported alkoxylated organotin reactant, to the process for preparing same, to the use of such a reactant as a catalyst for heterogeneous-phase organic synthesis, and also to a process for heterogeneous-phase synthesis of 5-substituted or 1,5-disubstituted tetrazoles using such a reactant.
Described herein are inventive methods for synthesis of tetrazoles. In some embodiments, the method involves the use of a flow reactor. The methods provided herein are capable at being carried out in short reaction times, with high yields, with minimal side reactions, and/or with minimal chance of explosions caused by the presence of azides.