The present invention relates to a novel process for preparing chloro- or bromoaromatics of the formula (II) by diazotizing the formula (I) by means of sodium nitrite or potassium nitrite in the presence of aqueous hydrochloric or hydrobromic acids and then reacting with an iron(II) or iron(III) compound, optionally in the presence of additional amounts of hydrogen chloride or hydrogen bromide or alkali metal or alkaline earth metal chlorides or bromides.
[EN] PROCESS FOR MAKING NITRILES<br/>[FR] MÉTHODE DE PRODUCTION DE NITRILES
申请人:INVISTA TECH SARL
公开号:WO2012005910A1
公开(公告)日:2012-01-12
Adiponitrile is made by reacting 3-pentenenitrile with hydrogen cyanide. The 3- pentenenitrile is made by reacting 1,3-butadiene with hydrogen cyanide. The catalyst for the reaction of 1,3-butadiene with hydrogen cyanide to make 3-pentenenitrile is recycled. At least a portion of the recycled catalyst is purified by an extraction process, which separates catalyst degradation products and reaction byproduct from the catalyst.
mild, reagent-cyanide-free, and efficient synthesis of O-phosphinoyl-protected cyanohydrins from readily available α-substituted malononitriles was realized using diarylphosphine oxides in the presence of O2. Mechanistic studies indicated that in addition to the initial aerobic oxidation of the malononitrile derivative notable features of this process include the formation of a tetrahedral intermediate
[EN] CANNABINOID TYPE 1 RECEPTOR MODULATORS<br/>[FR] MODULATEURS DU RÉCEPTEUR CANNABINOÏDE DE TYPE 1
申请人:UNIV TORONTO
公开号:WO2016029310A1
公开(公告)日:2016-03-03
The present disclosure relates to indole derivatives of the formula (I) which are cannabinoid type 1 receptor modulators and which are useful in the treatment of diseases in which modulation of the receptor is beneficial; to processes for their preparation; to pharmaceutical compositions comprising them; and to methods of using them.
[EN] FURO[3,2-D]PYRIMIDINE DERIVATIVES<br/>[FR] DÉRIVÉS DE FURO[3,2-D]PYRIMIDINE
申请人:PALAU PHARMA SA
公开号:WO2009056551A1
公开(公告)日:2009-05-07
Furo[3,2-d]pyrimidine derivatives of formula I, wherein the meanings for the various substituents are as defined in the description. These compounds are useful as H4 receptor antagonists.