Reductive deprotection of allyl, benzyl and sulfonyl substituted alcohols, amines and amides using a naphthalene-catalysed lithiation
摘要:
The reaction of different protected alcohols, amines and amides with lithium and a catalytic amount of naphthalene (4 mol %) in THF at low temperature leads to their deprotection under very mild reaction conditions, the process being in many cases chemoselective. (C) 1997 Elsevier Science Ltd.
METHODS AND INTERMEDIATES FOR PREPARING PHARMACEUTICAL AGENTS
申请人:Polniaszek Richard
公开号:US20100256366A1
公开(公告)日:2010-10-07
The invention provides methods and intermediates that are useful for preparing a compound of formula I:
and salts thereof.
本发明提供了用于制备公式I化合物的有用方法和中间体:
及其盐类。
Electrosynthesis of sulfonamides from DMSO and amines under mild conditions
作者:Zhiguan Lin、Liangbin Huang、Gaoqing Yuan
DOI:10.1039/d1cc00026h
日期:——
With DMSO as the solvent and the precursor of a –SO2Me unit at room temperature, a novel electrochemical oxidization and amination of DMSO with amines was developed for the synthesis of sulfonamides.
[EN] METHOD FOR THE PRODUCTION OF 18F-LABELED ACTIVE ESTERS AND THEIR APPLICATION EXEMPLIFIED BY THE PREPARATION OF A PSMA-SPECIFIC PET-TRACER<br/>[FR] PROCÉDÉ DE PRODUCTION D'ESTERS ACTIFS MARQUÉS AU 18F ET LEUR APPLICATION ILLUSTRÉE PAR LA PRÉPARATION D'UN TRACEUR POUR PET SPÉCIFIQUE DE L'ANTIGÈNE MEMBRANAIRE SPÉCIFIQUE DE LA PROSTATE (PSMA)
申请人:MAX PLANCK GES ZUR FÖRDERUNG DER WISSENSCHAFTEN E V
公开号:WO2016030329A1
公开(公告)日:2016-03-03
Novel efficient, time-saving and reliable radiofluorination procedures for the production of 18F-labelled active esters via nucleophilic substitution of the corresponding onium precursors with 18F- are described. The active ester including [18F]F-Py-TFP and [18F]TFB produced by one of these methods was used to prepare PSMA-specific PET tracers such as [18F]DCFPyL. The key advantages of these inventive methods are efficiency, short time of preparation and excellent amenability to automation. A pharmaceutical composition containing at least one PSMA-specific PET tracers prepared by the inventive method is useful for positron emission tomography (PET) imaging, especially imaging prostate tumor.
METHOD OF PREPARING AN INHIBITOR OF CYTOCHROME P450 MONOOXYGENASE, AND INTERMEDIATES INVOLVED
申请人:GILEAD SCIENCES, INC.
公开号:EP3009434A1
公开(公告)日:2016-04-20
The invention provides methods and intermediates that are useful for preparing a compound of formula I.
这项发明提供了制备公式I化合物的有用方法和中间体。
10.1055/a-2348-5631
作者:Maguire, Anita R、Judge, Evan、O'Shaughnessy, Keith A、Lawrence, Simon E.、Collins, Stuart G.
DOI:10.1055/a-2348-5631
日期:——
Copper-mediated reactions of α-diazo-β-keto sulfonamides led to a range of products, including alkynesulfonamides, enamines, and α-halosulfonamides, with no evidence for intramolecular C–H insertion in any of the reactions, in contrast to the reactivity of the comparable α-diazo-β-oxo sulfones. Use of copper(II) triflate (5 mol%) led to the isolation of a series of alkynesulfonamides (up to 12% yield)