This application discloses a composition comprising a malodor compound and an anti-odor ingredient effective for reducing the presence or production of malodor. The composition may be topically applied to a subject and is useful for cosmetic conditions, pharmaceutical indications, or other objectives.
N-acylaminoacidesters are easily accessible from enamides by cobalt-catalyzed hydroalkoxycarbonylation in moderate to excellent yield. An important reaction parameter for selective carbonylation is the use of low hydrogen partial pressure, which prevents hydrogenation as a side reaction. The reported method is applicable to various enamides and alcohols. A DFT calculation of the catalytic cycle
Transfer Hydrogenation of Nitriles, Olefins, and <i>N</i>-Heterocycles Catalyzed by an <i>N</i>-Heterocyclic Carbene-Supported Half-Sandwich Complex of Ruthenium
作者:Van Hung Mai、Georgii I. Nikonov
DOI:10.1021/acs.organomet.5b00967
日期:2016.4.11
In the presence of KOBut, N-heterocyclic carbene-supported half-sandwich complex [Cp(IPr)Ru(pyr)(2)][PF6] (3) (IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2ylidene) catalyzes transfer hydrogenation (TH) of nitriles, activated N-heterocycles, olefins, and conjugated olefins in isopropanol at the catalyst loading of 0.5%. The TH of nitriles leads to imines, produced as a result of coupling of the initially formed amines with acetone (produced from isopropanol), and showed good chemoselectivity. Reduction of N-heterocycles occurs for activated polycyclic substrates (e.g., quinoline) and takes place exclusively in the heterocycle. The TH also works well for linear and cyclic olefins but fails for trisubstituted substrates. However, the C=C bond of alpha,beta-unsaturated esters, amides, and acids is easily reduced even for trisubstituted species, such as isovaleriates. Mechanistic studies suggest that the active species in these catalytic reactions is the trihydride Cp(IPr)RuH3 (5), which can catalyze these reactions in the absence of any base. Kinetic studies are consistent with a classical inner sphere hydride-based mechanism of TH.
[EN] ANTI-ODOR COMPOSITIONS AND THERAPEUTIC USE<br/>[FR] COMPOSITIONS ANTI-ODEURS ET UTILISATION THERAPEUTIQUE ASSOCIEE
申请人:YU RUEY J
公开号:WO2006119283A2
公开(公告)日:2006-11-09
[EN] This application discloses a composition comprising a malodor compound and an anti-odor ingredient effective for reducing the presence or production of malodor. The composition may be topically applied to a subject and is useful for cosmetic conditions, pharmaceutical indications, or other objectives. [FR] L'invention concerne une composition contenant un composé malodorant et un ingrédient anti-odeurs permettant de réduire la présence ou la fabrication de mauvaises odeurs. Cette composition peut être topiquement appliquée sur un sujet et est utile dans le domaine cosmétique, pharmaceutique ou dans d'autres domaines.