[EN] PROCESS FOR THE DI-O-ALKYLATION OF 1,3-DIOLS TO 1,3-DIETHERS<br/>[FR] PROCÉDÉ DE DI-O-ALKYLATION DE 1,3-DIOLS EN 1,3-DIÉTHERS
申请人:SABIC GLOBAL TECHNOLOGIES BV
公开号:WO2021004760A1
公开(公告)日:2021-01-14
The present invention relates to a process for the di-O-alkylation of a 1,3-diol according to Formula I (I), said process comprising reacting said 1,3-diol with dioxane, an aliphatic or aromatic hydrocarbon solvent, an alkali metal hydroxide, and dimethyl sulphate, in order to obtain a 1,3-diether according to Formula II (II), wherein R1 and R2 are each independently a hydrogen atom or a hydrocarbyl group selected from alkyl, alkenyl, aryl, aralkyl, or alkylaryl groups, and one or more combinations thereof. The process according to the invention is an improved process for preparing 1,3-diether, such as 9,9-bis(methoxymethyl)fluorene, in a high yield and/or having a high purity. 9,9-bis(methoxymethyl)fluorene is a compound that is used as an electron donor for Ziegler-Natta catalysts.
METHOD FOR PRODUCING PYRAZOLE FUSED RING DERIVATIVE
申请人:Eisai R&D Management Co., Ltd.
公开号:EP2202233A1
公开(公告)日:2010-06-30
Disclosed is a commercially advantageous method for producing a pyrazole fused ring derivative (such as a 7-phenylpyrazolo[1,5-a]pyridine derivative). Specifically disclosed is a method for producing a compound (I) represented by the formula (I) below or a salt thereof, which comprises a step A wherein a hydroxy group in a compound (IV) represented by the formula (IV) below is converted into a methoxy group, thereby obtaining a compound (I) or a salt thereof:
11-PHOSPHOROUS STEROID DERIVATIVES USEFUL AS PROGESTERONE RECEPTOR MODULATORS
申请人:Fiordeliso J. James
公开号:US20070232570A1
公开(公告)日:2007-10-04
The present invention is directed to novel 11-phosphorous steroid derivatives, pharmaceutical compositions containing them and their use in the treatment of disorders and conditions modulated by a progesterone or glucocorticoid receptor.
NITROGEN-CONTAINING ORGANIC COMPOUND, CHEMICALLY AMPLIFIED POSITIVE RESIST COMPOSITION, AND PATTERNING PROCESS
申请人:SAGEHASHI Masayoshi
公开号:US20120052441A1
公开(公告)日:2012-03-01
An aralkylcarbamate of imidazole base is effective as the quencher. In a chemically amplified positive resist composition comprising the carbamate, deprotection reaction of carbamate takes place by reacting with the acid generated upon exposure to high-energy radiation, whereby the composition changes its basicity before and after exposure, resulting in a pattern profile with advantages including high resolution, rectangular shape, and minimized dark-bright difference.
[EN] QUINOXALINE-CONTAINING COMPOUNDS AS HEPATITIS C VIRUS INHIBITORS<br/>[FR] COMPOSÉS CONTENANT DE LA QUINOXALINE EN TANT QU'INHIBITEURS DU VIRUS DE L'HÉPATITE C
申请人:ENANTA PHARM INC
公开号:WO2009064975A1
公开(公告)日:2009-05-22
The present invention discloses compounds of formula I and II or pharmaceutically acceptable salts, esters, or prodrugs thereof which inhibit serine protease activity, particularly the activity of hepatitis C virus (HCV) NS3-NS4A protease. Consequently, the compounds of the present invention interfere with the life cycle of the hepatitis C virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.