COMPOUNDS FOR THE TREATMENT AND PREVENTION OF INFLUENZA
申请人:Chen Li
公开号:US20110195979A1
公开(公告)日:2011-08-11
A compound of formula (I)
as well as pharmaceutically acceptable salt thereof, wherein R
1
to R
4
and Ar are as defined in description and in claims, can be used as a medicament.
Ruthenium‐Catalyzed Deaminative Hydrogenation of Amino Nitriles: Direct Access to 1,2‐Amino Alcohols
作者:Pilar Calleja、Martin Ernst、A. Stephen K. Hashmi、Thomas Schaub
DOI:10.1002/chem.201900531
日期:2019.7.17
approach for the efficient and highly selective synthesis of 1,2‐amino alcohols by direct reductive hydrolysis of N‐formyl‐protected α‐amino nitriles is reported. The commercially available RuHCl(CO)(PPh3)3 complex was found to be a suitable catalyst for this operationally simple protocol, in which no stoichiometric amounts of undesired metal waste are generated. The deaminative hydrogenation is performed
报道了一种通过N-甲酰基保护的α-氨基腈直接还原水解来高效,高选择性合成1,2-氨基醇的新方法。发现可商购获得的RuHCl(CO)(PPh 3)3络合物对于该操作简单的方案是合适的催化剂,其中不产生化学计量的不希望的金属废物。脱氨氢化反应在55 bar H 2下进行,使用1,4-二恶烷/水的6:1混合物作为溶剂。另外,在非常相似的条件下由氰基酮制备羟甲基醇。
CaO-catalyzed preparation of isophoronenitrile
申请人:——
公开号:US20040092761A1
公开(公告)日:2004-05-13
The present invention describes a process for preparing isophoronenitrile by adding HCN to isophorone. The catalyst used is CaO which has a BET surface area of >1.5 m
2
/g. The use of such a catalyst achieves high yields and selectivities.
PROCESS FOR PREPARING 3-AMINOMETHYL-3,5,5-TRIMETHYLCYCLOHEXYLAMINE
申请人:Galle Markus
公开号:US20130253226A1
公开(公告)日:2013-09-26
The invention relates to an improved process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine, referred to hereinafter as isophoronediamine or, in abbreviated form, IPDA, by: I. preparation of isophorone by catalyzed aldol condensations with acetone as reactant; II. reaction of isophorone with HCN to form isophoronenitrile (IPN, 3-cyano-3,5,5-trimethylcyclohexanone); III. catalytic hydrogenation and/or catalytic reductive amination (also referred to as aminative hydrogenation) of 3-cyano-3,5,5-trimethylcyclohexanone, hereinafter called isophoronenitrile or, in abbreviated form, IPN, to give the isophoronediamine.