Dynamic mixtures generated by reversible aminal formation of fragrance aldehydes with N,N′-dibenzyl alkyldiamines in aqueous systems were found to be suitable delivery systems for the controlled release of bioactive volatiles.
The effect of the nitrogen non-bonding electron pair on the NMR and X-ray in 1,3-diazaheterocycles
作者:Cesar Garcías-Morales、Selene H. Martínez-Salas、Armando Ariza-Castolo
DOI:10.1016/j.tetlet.2012.04.077
日期:2012.6
The effect of the nitrogennonbondingelectronpair on the 1JC,H values of 1,3-diazaheterocycles was analyzed and compared to 1,5-diazabiciclo[3.2.1]octanes, which have a restricted conformation. The 1JC,H values were measured by observing the 13C satellites in the 1H NMR spectra and then determining the 1H-coupled 13C NMR spectra. The 1JC,H values are 10 Hz larger when the α-hydrogen is synperiplanar
分析了氮非键电子对对1,3-二氮杂杂环的1 J C,H值的影响,并将其与1,5-二氮杂双[3.2.1]辛烷具有受限的构象进行了比较。的1 Ĵ C,H通过观察测定值13个在C卫星1 1 H NMR谱,然后确定所述1 H-耦合13 C NMR光谱。的1 Ĵ C,H的值是10赫兹时较大的α氢是synperiplanar而非antiperiplanar到氮上,其用作的轨道的实验证据的非键电子对Ñ Ñ →σ∗ C,H ap相互作用。此外,还讨论了由氮孤对与赤道氢的反键轨道(β位)相互作用产生的同分异构效应(n N →σ ∗ C(β),H eq)。
CONTROLLED RELEASE OF ACTIVE ALDEHYDES AND KETONES FROM EQUILIBRATED DYNAMIC MIXTURES
申请人:Herrmann Andreas
公开号:US20100098650A1
公开(公告)日:2010-04-22
The present invention concerns a dynamic mixture obtained by combining, in the presence of water, at least one diamine derivative that includes at least one benzylamine moiety, with at least one active aldehyde or ketone. The inventive mixture is capable of releasing in a controlled and prolonged manner the active compound, in particular those that are perfuming ingredients, into the surrounding environment.
Postowskii; Nosenkowa, Zhurnal Obshchei Khimii, 1957, vol. 27, p. 526,528; engl. Ausg. S. 595
作者:Postowskii、Nosenkowa
DOI:——
日期:——
Kalyanam, N; Parthasarathy, P C; Ananthan, L, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1992, vol. 31, # 4, p. 243 - 247
作者:Kalyanam, N、Parthasarathy, P C、Ananthan, L、Manjunatha, S G、Likhate, M A