[EN] PROCESS FOR PREPARING (R)-2-ACETAMIDO-N-BENZYL-3-METHOXY-PROPIONAMIDE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE (R)-2-ACÉTAMIDO-N-BENZYL-3-MÉTHOXYPROPIONAMIDE
申请人:MSN LAB LTD
公开号:WO2011099033A1
公开(公告)日:2011-08-18
Processes for preparing and purifying (R)-2-acetamido-N-benzyl-3-methoxy- propionamide of formula-1 and intermediates thereof are provided.
提供了制备和纯化式-1中(R)-2-乙酰氨基-N-苄基-3-甲氧基丙酰胺及其中间体的过程。
FLUOROALKYLATING AGENT
申请人:IHARA CHEMICAL INDUSTRY CO., LTD.
公开号:US20170197920A1
公开(公告)日:2017-07-13
Problem to be Solved
It is intended to provide an industrially preferable fluoroalkylating agent and use thereof.
Solution
The present invention provides a fluoroalkylating agent represented by the general formula (1) wherein R
1
is a C1 to C8 fluoroalkyl group; R
2
and R
3
are each independently a C1 to C12 alkyl group or the like; Y
1
to Y
4
are each independently a hydrogen atom, a halogen atom, or the like; and X
−
is a monovalent anion.
A compound of the general formula (3): R
4
—S—R
1
having an introduced C1 to C8 fluoroalkyl group is easily obtained by reacting a compound of the general formula (2): R
4
—S—Z wherein R
4
is a hydrocarbon group or the like; and Z is a leaving group, with the compound of the general formula (1).
A process for preparing letrozole, and purified letrozole.
一种用于制备来曲唑和纯化来曲唑的过程。
[EN] AN IMPROVED PROCESS FOR THE PREPARATION OF LACOSAMIDE<br/>[FR] PROCÉDÉ AMÉLIORÉ DE PRÉPARATION DE LACOSAMIDE
申请人:ALEMBIC PHARMACEUTICALS LTD
公开号:WO2013024383A1
公开(公告)日:2013-02-21
The present invention relates to an improved process for the preparation of Lacosamide having formula (I).
本发明涉及一种改进的制备具有化学式(I)的拉考酰胺的方法。
PROCESS FOR THE PREPARATION OF LACOSAMIDE
申请人:Garimella K a s s Narayan
公开号:US20130123537A1
公开(公告)日:2013-05-16
The present invention relates to an improved process for the preparation of Lacosamide of Formula (I), comprising: O-methylating a compound of Formula (V) or a compound of Formula (XX) or a compound of Formula XXII; in the presence of a methylating agent and a base to produce Lacosamide of Formula (I).