Substituted (2-phenoxyphenyl)acetic acids with antiinflammatory activity. 2
作者:David C. Atkinson、Keith E. Godfrey、Peter L. Myers、Nigel C. Phillips、Michael R. Stillings、Anthony P. Welbourn
DOI:10.1021/jm00364a005
日期:1983.10
A number of polychlorinated (phenoxyphenyl)acetic acids were prepared as close structural analogues of the antiinflammatory compound fenclofenac, [2-(2,4-dichlorophenoxy)phenyl]acetic acid. Increased potency was shown in several of these compounds, in particular, [2-(2,3,5,6-tetrachlorophenoxy) phenyl]acetic acid (8), which was 40 times more potent than fenclofenac in the adjuvant-induced arthritis
Acid-Promoted sp<sup>3</sup> C–H Bond Cleavage in a Series of (2-Allylphenoxo)ruthenium(II) Complexes. Mechanistic Insight into the Aryloxo–Acid Interaction and Bond Cleavage Reaction
interaction. Interestingly, further association of 2·HOR with the second acid leads to the cleavage of the benzylic C–H bond, giving RuCp[C3H41-C6H3(OH-2)(R)}-η3C,C′,C″](PPh3) (3). The thermodynamic and kinetic studies suggest formation of hydrogen bonds among two Brϕnsted acid molecules, lone-pair electrons in the aryloxo oxygen, and a benzylic methylene proton. Such association makes the Ru(II) center more
ALLYL-PHENOXY-CYCLOPHOSPHAZENE COMPOUND, AND PRODUCTION METHOD THEREFOR
申请人:OTSUKA CHEMICAL CO., LTD.
公开号:US20180155376A1
公开(公告)日:2018-06-07
An object of the present invention is to provide a mixture of cyclophosphazenes suitably substituted with phenoxy having a polymerizable functional group, such as allyl, on the phenyl ring and a production method for the mixture. The invention relates to a mixture of cyclophosphazene compounds that each contain a plurality of constituent units linked to each other, each constituent unit being represented by formula (I):
wherein R
1
and R
2
are identical or different and represent C
1-4
alkyl or the like, the mixture containing cyclophosphazene compounds in which 3, 4, and 5 constituent units represented by formula (I) are linked, wherein the cyclophosphazene compound containing 3 linked constituent units is cyclophosphazene compound (I-A) with a specific structure, compound (I-A) includes cyclophosphazene compounds (I-A
2
) and (I-A
3
) having a specific structure, and compounds (I-A
2
) and (I-A
3
) are present in an amount of 80 wt % or more in total in cyclophosphazene compound (I-A).
A method of producing a phenol compound comprising a step of oxidizing an aromatic aldehyde to an aryl formate and an aromatic carboxylic acid with an oxygen-containing gas, and a step of decomposing the aryl formate to the phenol compound. To facilitate the separation of the aryl formate and the unreacted aromatic aldehyde, a mixture of the aryl formate and the unreacted aromatic aldehyde is recycled to the oxidation process to concentrate the aryl formate in the oxidation mixture. Alternatively, the oxidation process is carried out in an organic solvent having substantially no ability of dissolving water to increase the conversion of the aromatic aldehyde and the selectivity of the aryl formate, thereby producing the aryl formate in a high yield. In another method, the aryl formate is produced by oxidizing the aromatic aldehyde in the organic solvent having substantially no ability of dissolving water with performic acid generated in situ in the reaction system from the reaction between formic acid and hydrogen peroxide. Since the oxidation proceeds in the organic solvent, hydrogen peroxide in aqueous phase contact the aromatic aldehyde. This significantly reduces the amount of explosive cyclic perther and a high-boiling product.
Process for preparing an aryl formate and an aromatic carboxylic acid
申请人:MITSUBISHI GAS CHEMICAL COMPANY, INC.
公开号:EP1209145A2
公开(公告)日:2002-05-29
A method of producing aryl formate by oxidizing the aromatic aldehyde in an organic solvent having substantially no ability of dissolving water with performic acid generated in situ in the reaction system from the reaction between formic acid and hydrogen peroxide.
Optionally the method comprises a second step for decomposing the aryl formate to a phenol compound. This second step may be performed by thermally decomposing the aryl formate to the phenol compound and carbon monoxide at 110 to 350°C in liquid phase in the presence of an alkali metal compound.