Abstract:
A diester of a fused ring compound of the formula (I): wherein: the fused rings are both aromatic; R1 and R4 to R6 substituents are H or ester moieties having C1 to C20 linear or branched alkyl chains; R2 and R3 are —C(O)OCxHy, wherein x is from 10 to 12 and y is from 21 to 25; two adjacent R1 to R4 substituents are —C(O)OCxHy, wherein x is from 10 to 12 and y is from 21 to 25; and when R3 and R4 are ester moieties, the alkyl chains of R4 are not C5 or C8; and polymer compositions containing the fused ring compound.
Abstract:
Provided are methods and materials for the functionalization of a heteroalkane or arene using an oxidizing electrophile as a stoichiometric agent or catalyst. The reaction involves the replacement of a hydrogen atom on an sp3-hybridized carbon atom of the heteroalkane or of a hydrogen atom on an sp2-hybridized carbon atom of the arene. A main group element organometallic intermediate is formed that undergoes further conversion to a functionalized heteroalkane or arene.
Abstract:
A skin-moisture-regulating composition for cosmetic or dermatological preparations, the composition containing succinic acid derivatives corresponding to formula I:R.sup.1 O(C.sub.n H.sub.2n O).sub.x CO--CHR.sup.2 --CHR.sup.3 --CO(OC.sub.n H.sub.2n O).sub.y OR.sup.4 (I)wherein R.sup.1 is an alkyl, alkenyl, mono-or dihydroxyalkyl or hydroxyalkenyl group containing 6 to 22 carbon atoms, one of R.sup.2 and R.sup.3 is hydrogen and the other is an alkyl or alkenyl group containing 12 to 22 carbon atoms, n=2 or 3, x and y are average degrees of alkoxylation and have values of 0 to 20 and 1 to 20, respectively, and R.sup.4 is hydrogen or a group R.sup.1 O--(C.sub.n H.sub.2n O).sub.x --CO--CHR.sup.2 --CHR.sup.3 --CO--, or an alkyl, alkenyl, mono- or dihydroxyalkyl or hydroxyalkenyl group containing 6 to 22 carbon atoms.
Abstract:
An organic polyol ester of a polycarboxylic acid having formulae (Para) and/or (Meta) and/or (Ortho), wherein R.sub.6 is --(COOR.sub.1)x, or (I).sub.1 R.sub.7 is H; or R.sub.6 and R.sub.7 together for (II); R.sub.1 and R.sub.2 are hydrogen or --OR.sub.1 and --OR.sub.2 together form an anhydride (--0--) bond; x is an integer of 0 or 1; Z is an integer ranging from 1 to the number of hydroxy groups on the polyol and D is a polyol residue. Also disclosed are processes for the preparation of these polyol esters, a tanning composition comprising a metallic salt and a polyol ester, and a method of tanning using said composition.
Abstract:
Allylic esters of tetrachlorophthalic acid are formed using allylic alcohol both as a reactant and a solvent. In the first step, the alcohol and a base are reacted with tetrachlorophthalic anhydride to form the half-ester sodium salt. In the second step, the sodium salt is reacted with allylic halide to form the diester which crystallizes from solution. The excess solvent may be treated to recover the raw materials or recycled.
Abstract:
Disclosed embodiments include an open cell, molded polyurethane foam comprising the reaction product of a reaction mixture comprising: an isocyanate mixture; and a polyol formulation, comprising a glycerin-initiated, alkylene-oxide capped natural oil polyol having a molecular weight of between 3,000 and 8,000 and a polydispersity index (PDI) of between approximately 1.5 and 2.5, wherein the PDI is defined as the ratio of the weight-average molecular weight, Mw, to the number-average molecular weight, Mn.
Abstract:
A process for producing a fluorine-containing 2,4-diol represented by the formula [4], wherein R1 represents a hydrogen atom or an acyclic or cyclic alkyl group having a carbon atom number of 1 to 7; R2 represents an acyclic or cyclic alkyl group having a carbon atom number of 1 to 7; and R1 and R2 are optionally bonded to each other to form a ring, includes reducing a hydroxy ketone represented by the formula [3], wherein R1 and R2 are defined as above, by hydrogen in the presence of a ruthenium catalyst.
Abstract:
The present invention provides a method of kinetic optical resolution of carboxylic acid derivatives using specific optically active catalysts. A racemic or diastereomeric mixture of carboxylic acid derivatives of the formula (A) is reacted with a nucleophile in the presence of an optically active catalyst to form an optically active nucleophile derivative of the formula (B). The catalyst is an optically active compound represented by the formula (C) or (D) [wherein R1 is a substituted or unsubstituted, saturated or unsaturated, straight-chain, branched or alicyclic aliphatic hydrocarbon group which can have a heteroatom, R2 is ethyl or vinyl, and R5 is hydrogen or methoxy respectively].
Abstract:
Described is a genus of E2,E4,Z8-undecatrienoic acid derivatives defined according to the structure: wherein Z represents —OR″ or —NRR′ with the provisos that when Z is —OR″, R″ is hydrogen, C1-C6 straight chain or branched-chain alkyl or C3-C6 straight chain or branched-chain alkenyl; and when Z is —NRR′, R represents, in the alternative, hydrogen, methyl or ethyl and R′ represents methyl, ethyl, n-propyl, cyclopropyl, isopropyl, n-butyl, sec-butyl, isobutyl, 2-methylbutyl, cyclobutyl, cyclopentyl or allyl. The E2,E4,Z8-undecatrienoic acid derivatives are useful in imparting, augmenting and/or enhancing flavors, aromas and somatosensory effects in or to consumable materials such as foods, beverages, skin care products, oral care products, medicinal products and the like. Also described is a synthesis process for producing such derivatives.
Abstract:
A process for producing a crystalline chiral hydroxy ester of the formula: ##STR1## is disclosed. The process comprises reacting a diol of the formula: ##STR2## with an effective amount of isobutryic anhydride and an effective amount of a lipase enzyme in an effective amount of acetonitrile, said reaction being conducted at a low temperature, and wherein X.sup.1 and X.sup.2 are each independently selected from F or Cl.