The present invention relates to phenolic thioetheramides of the formula ##STR1## wherein R.sup.1 and R.sup.2 are tert-alkyl or phenyl, Alk.sup.1 and Alk.sup.2 are alkylene; X is sulfur or oxygen, m is 0, 1, or 2; and R is ##STR2## wherein R.sup.3 and R.sup.4 are hydrogen or alkyl and Alk.sup.3 is alkylene.
Process and preparation of .alpha.-alkoxy acetic acids and their salts
申请人:G. D. Searle & Co.
公开号:US05145992A1
公开(公告)日:1992-09-08
A process for producing an .alpha.-alkoxy acetic acids and salts thereof which comprises reacting an alcohol of the formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 can be hydrogen, alkyl, alkoxy, halo, phenyl, substituted phenyl, or hydroxy; A can be S, O or --CH.sub.2 --; and Alk is straight or branched chain alkylene, with a base in an aprotic solvent, then reacting the resulting alkoxide with a monohaloacetic acid ester to give an alkoxyacetate followed by reaction of the alkoxyacetate with a hydrogen halide, organic acid or Lewis acid in nitromethane to give the corresponding .alpha.-alkoxyacetic acid which then may be recovered or may optionally be converted to the corresponding salt by contracting the .alpha.-alkoxyacetic acid with a base.
Process for preparation of alpha-alkoxy acetic acids and their salts
申请人:G.D. Searle & Co.
公开号:EP0434896A1
公开(公告)日:1991-07-03
A process for producing an α-alkoxy acetic acids and salts thereof which comprises reacting an alcohol of the formula R-OH wherein R is alkyl, substituted alkyl, or cycloalkyl, or cycloalkyl alkyl with a base in an aprotic organic solvent to give an alkoxide followed by removal of the organic solvent and reaction of the alkoxide with a salt of a monohaloacetic acid in a polar aprotic solvent such as DMSO to give the corresponding alkoxyacetate salt which then may be recovered or may optionally be converted to the corresponding acid by contacting the alkoxy acetate salt with an acid.
一种生产α-烷氧基乙酸及其盐的工艺,包括使式 R-OH 其中 R 为烷基、取代烷基或环烷基的醇与碱反应,生成烷氧基氧化物,然后除去有机溶剂,使烷氧基氧化物与单卤乙酸的盐在壬烷醇中反应,生成α-烷氧基乙酸及其盐、或环烷基烷基与碱在非烷基有机溶剂中反应生成烷氧基氧化物,然后除去有机溶剂,再将烷氧基氧化物与单卤乙酸盐在极性非烷基溶剂(如二甲基亚砜)中反应生成相应的烷氧基乙酸盐,然后可回收或通过将烷氧基乙酸盐与酸接触转化为相应的酸。
PHENOLIC THIOETHERAMIDES AS 5-LIPOXYGENASE INHIBITORS