Process for cyclizing hydrolysis of an aminonitrile compound to a lactam
申请人:——
公开号:US20040116691A1
公开(公告)日:2004-06-17
The invention pertains to a process for cyclizing hydrolysis of an aminonitrile compound to a lactam in the presence of a catalyst.
It relates more particularly to a process for cyclizing hydrolysis of an aminonitrile compound in the presence of a solid catalyst of clay type. The invention applies particularly to the preparation of &egr;-caprolactam by cyclizing hydrolysis of aminocapronitrile.
Nickel-catalyzed hydrogenative coupling of nitriles and amines for general amine synthesis
作者:Vishwas G. Chandrashekhar、Wolfgang Baumann、Matthias Beller、Rajenahally V. Jagadeesh
DOI:10.1126/science.abn7565
日期:2022.6.24
Efficient and general methods for the synthesis of amines remain in high demand in the chemical industry. Among the many known processes, catalytic hydrogenation is a cost-effective and industrially proven reaction and currently used to produce a wide array of such compounds. We report a homogeneous nickel catalyst for hydrogenative cross coupling of a range of aromatic, heteroaromatic, and aliphatic
A process for the preparation of novel polyamides, the use of such polyamides for the production of fibers, sheets and moldings, and fibers, sheets and moldings obtainable from such polyamides, are provided.
A process for the preparation of novel polyamides, the use of such polyamides for the production of fibers, sheets and moldings, and fibers, sheets and moldings obtainable from such polyamides, are provided.
System made from a polyamide and a 2,6-diaminopyridine derivative and method for producing of said system
申请人:——
公开号:US20040147645A1
公开(公告)日:2004-07-29
A system comprising
a) a polyamide containing a sterically hindered piperidine derivative attached to the polymer chain by chemical bonding, and
b) a 2,6-diaminopyridine derivative.
一种系统,包括
a) 聚酰胺,含有通过化学键连接到聚合物链上的立体受阻的哌啶衍生物,和
b) 2,6-二氨基吡啶衍生物。