There is described the use of a protic ionic liquid comprising a trialkylammonium salt as a solvent.
这里描述了一种包含三烷基铵盐的质子离子液体作为溶剂的使用。
Derivatization of amines for electrochemical detection
申请人:The United States of America as represented by the Department of Health
公开号:US04908322A1
公开(公告)日:1990-03-13
Primary and secondary amines in biological fluids are selectively derivitized by reaction with esters of N-hydroxysuccinimide or N-hydroxysulfosuccinimide to form an N-acylated derivative. Those N-acylated derivatives may then be extracted into a polar organic phase and extracted. Non-electroactive amines may be made suitable for coulometric analysis by selecting the ester used so as to attach an electroactive group to the amine. For example, histamine may be reacted with the Bolton-Hunter reagent to form a suitable derivative in high yield.
Process for the preparation and purification of 2-(alkoxyalkylidene)-3-ketoalkanoic acid esters from 3-ketoalkanoic acid esters
申请人:Draper W. Richard
公开号:US20050027140A1
公开(公告)日:2005-02-03
In its several embodiments, this invention discloses a novel process to prepare the compounds of Formula 3:
wherein R
1
is lower alkyl, and R
2
and R
3
can be the same or different, each being independently selected from the group consisting of alkyl, aryl and aralkyl; said process being carried out in a suitable solvent with at least one tert-amine carboxylate salt catalyst. The compounds of formula 3 are chemical intermediates useful for the synthesis of various heterocyclic compounds. These heterocyclic compounds are in turn useful precursors for diverse pharmaceutical, herbicidal and insecticidal agents. In particular, these intermediates are useful precursors to a variety of CCR5 inhibitors.
Polymeric particles and a method of preparaing the same
申请人:EASTMAN KODAK COMPANY
公开号:EP0571301A2
公开(公告)日:1993-11-24
This invention provides polymeric particles uniformly coated with colloidal cupric oxide particles by forming a suspension of polymer particles as a discontinuous phase in a continuous aqueous phase containing a colloidal cupric oxide suspension stabilizer.
Composition for film formation, method of film formation, and silica-based film
申请人:JSR CORPORATION
公开号:US20030091838A1
公开(公告)日:2003-05-15
A composition for film formation which comprises:
(A) a product of hydrolysis and condensation obtained by hydrolyzing and condensing at least one silane compound selected from the group consisting of compounds represented by the formula (1), compounds represented by the formula (2), and compounds represented by the formula (3) in the presence of water and an ammonium compound, and
(B) an organic solvent.