26311-45-5Relevant articles and documents
Method for copper-catalyzed carboxylation reaction of arylboronic acid and carbon dioxide
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Paragraph 0081; 0082, (2019/12/29)
The invention discloses a method for a copper-catalyzed carboxylation reaction of arylboronic acid and carbon dioxide. According to the method, carbon dioxide is used as a C1 source, copper catalysisis adopted, alkoxide serves as alkali, and a reaction is carried out in an organic solvent; the method is simple in process and easy to implement, and shows wide functional group compatibility; the method allows various arylboronic acids such as monosubstituted or polysubstituted phenylboronic acid, polycyclic aromatic hydrocarbon boronic acid and benzoheterocyclic boronic acid to be converted into corresponding arylcarboxylic acids with considerable yield under mild conditions; and the produced carboxylic acids have important application value, and can be used for deriving a great number of other common chemical substances, such as acyl halide, acid anhydride, ester and amide.
METHOD OF REGIOSELECTIVE SYNTHESIS OF SUBSTITUTED BENZOATES
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Page/Page column 11; 12; 16; 18; 19, (2013/03/26)
A method of synthesis of para-substituted benzoate esters and acids is provided, wherein the para-substituted regioisomer is obtained substantially free of the meta-substituted impurity, the method comprising contacting a coumalate ester or acid and an un activated alkene at elevated temperature in the presence of a metal oxidation catalyst and an oxidant. The metal oxidation catalyst can be palladium, such as palladium on carbon, and the oxidant can be the oxygen gas in ambient air. The reaction can be carlied out without solvent or in high boiling hydrocarbon solvents such as mesitylene. When the un activated alkene is a monosubstituted alkene, yields of at least about 50 or 60% of para-substituted ester and acid products, respectively, are obtained, substantially free of the regioisomelic meta-substituted impurity.
Aromatics from pyrones: Para-substituted alkyl benzoates from alkenes, coumalic acid and methyl coumalate
Kraus, George A.,Riley, Sean,Cordes, Travis
experimental part, p. 2734 - 2736 (2011/11/06)
The Diels-Alder reaction of coumalic acid and methyl coumalate with unactivated alkenes provides only para-substituted adducts in good yield.
INHIBITORS OF FUNGAL INVASION
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Drawing sheet 77, (2010/02/09)
This invention relates to various anti-fungall agents including agents that are inhibitors of fungal invasion.
Cross coupling reactions of organozinc iodides with solid-supported electrophiles: Synthesis of 4-substituted benzoic and 3-substituted (E)- and (Z)-propenoic acids and amides
Oates, Leslie J.,Jackson, Richard F.W.,Block, Michael H.
, p. 140 - 144 (2007/10/03)
The solid-supported iodobenzoic acid derivatives 8-10 were coupled with a range of organozinc reagents 1-4 under palladium(o) catalysis. The coupled products released by acidic cleavage with TFA were obtained in high purities after recrystallization. Anal
Palladium catalyzed cross-coupling reaction of Grignard reagents with halobenzoic acids, halophenols and haloanilines
Bumagin, Nikolai A.,Luzikova, Elena V.
, p. 271 - 273 (2007/10/03)
Convenient syntheses of substituted benzoic acids, phenols and anilines have been achieved by using palladium catalyzed cross-coupling reactions between Grignard reagents and aryl halides containing carboxy, hydroxy and amino groups without a protection-deprotection sequence.
New potent antagonists of leukotrienes C4 and D4. 1. Synthesis and structure-activity relationships
Nakai,Konno,Kosuge,Sakuyama,Toda,Arai,Obata,Katsube,Miyamoto,Okegawa,Kawasaki
, p. 84 - 91 (2007/10/02)
(p-Amylcinnamoyl)anthranilic acid (3a) had moderate antagonist activities against LTD4-induced smooth muscle contraction on guinea pig ileum and LTC4-induced bronchoconstriction in anesthetized guinea pigs. Modifications were made in the hydrophobic part (cinnamoyl moiety) and the hydrophilic part (anthranilate moiety) of 3a. A series of 8-(benzoylamino)-2-tetrazol-5-yl-1,4-benzodioxans and 8-(benzoylamino)-2-tetrazol-5-yl-4-oxo-4H-1-benzopyrans were revealed to be potent antagonists of leukotrienes C4 and D4. Among both series, ONO-RS-347 (18k) and ONO-RS411 (19h) were the most potent and orally active antagonists, respectively. Structure-activity relationships are discussed.
Cyano-substituted biphenyl compounds and liquid crystalline dielectrics containing the same
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, (2008/06/13)
Biphenyl derivatives of the formula: STR1 wherein X is --CO--O-- or --O--CO--, R1 and R4 are alkyl of 1 to 10 carbon atoms, and one of R2 and R3 is CN and the other is H, are useful for lowering the dielectric anisotropy of liquid crystalline dielectrics.
