Syntheses and properties of N-allyl derivatives of ethylenediamine and diethylenetriamine
作者:N. H. Agnew、J. R. Parrish
DOI:10.1039/j39660000203
日期:——
In connexion with studies of cyclic polymerisation the allyl derivatives of ethylenediamine and diethylenetriamine have been prepared, and the new compounds have been characterised. The mixture of triamines obtained by direct allylation of diethylenetriamine has been separated by ion-exchange chromatography. The order of elution agrees with the calculated basic strengths of the compounds, and their
Synthesis and structures of 1,3,1′,3′-tetrabenzyl-2,2′-biimidazolidinylidenes (electron-rich alkenes), their aminal intermediates and their degradation products
作者:Bekir Çetinkaya、Engin Çetinkaya、José A. Chamizo、Peter B. Hitchcock、Hatam A. Jasim、Hasan Küçükbay、Michael F. Lappert
DOI:10.1039/a802123f
日期:——
substituted enetetramines 9 and 3 have been studied. From HNR(CH2)2NRH and CH(NMe2)2OBut or CH(OMe)2NMe2, two new intermediates along the pathway to 9, namely the orthoamide 11 and the bis(orthoamide) 12 were isolated. Each of 11 and 12 was converted into 9 by refluxing in toluene. Photolysis of 9 yielded the isomer10, while thermolysis of 9 gave the di(debenzylated) product 1,1′-dibenzyl-2,2′-biimidazoline
已研究了苄基(R)取代的四胺(9)和(3)。从HNR(CH 2)2 NRH和CH(NMe 2)2 OBu t或CH(OMe)2 NMe 2中,分离出两个通往9的新中间体,即邻酰胺11和双邻酰胺12。通过在甲苯中回流,将11和12中的每一个转化为9。9的光解生成异构体10,而9的热解生成二(去苄基化)产物1,1'-二苄基-2,2'-联咪唑啉13。至3的路线(R = R'= CH 2 Ph)类似于用于9的那些,涉及1,2-C 6 H 4 [N(R)H] 2与CH(OMe)2的缩合NMe 2或1,3-二苄基苯并咪唑氯化物8(X = Cl)与NaH之间的反应未得到预期的烯四胺3(9的二苯并类似物),取而代之的是双(脱苄基)产物15。加热orthoamide 1,2--R NC 6 H ^ 4 N(R)C (H)NME 2,从CH制备(NME 2)2 OBU吨和1,2--C 6 H ^ 4 [N(H)R]
Low-emulsifier or emulsifier-free systems of the oil-in-water type with a content of stabilizers and an amino-substituted hydroxybenzophenone
申请人:——
公开号:US20030124158A1
公开(公告)日:2003-07-03
Cosmetic or dermatological preparations which represent finely disperse systems of the oil-in-water type, comprising
a) an oil phase,
b) a water phase,
c) one or more stabilizers,
d) at most 2.00% by weight of one or more emulsifiers, and
e) an amino-substituted hydroxybenzophenone of the formula I
1
化妆品或皮肤科制剂,代表油包水型的细分散系统,包括
a) 油相,
b) 水相,
c) 一种或多种稳定剂,
d) 最多占总重量的2.00%的一种或多种乳化剂,以及
e) 公式I的氨基取代羟基苯酮 1
Experimental and Theoretical Study of an Intramolecular CF<sub>3</sub>-Group Shift in the Reactions of α-Bromoenones with 1,2-Diamines
作者:Vasily M. Muzalevskiy、Yury A. Ustynyuk、Igor P. Gloriozov、Vyacheslav A. Chertkov、Alexander Yu. Rulev、Evgeniy V. Kondrashov、Igor A. Ushakov、Alexey R. Romanov、Valentine G. Nenajdenko
DOI:10.1002/chem.201502706
日期:2015.11.16
The reactions of trifluoromethylated 2‐bromoenones and N,N′‐dialkyl‐1,2‐diamines have been studied. Depending on the structures of the starting compounds, the formation of 2‐trifluoroacetylpiperazine or 3‐trifluoromethylpiperazine‐2‐ones was observed. The mechanism of the reaction is discussed in terms of multistep processes involving sequential substitution of bromine in the starting α‐bromoenones
SATURATED N-HETEROCYCLIC CARBENE-LIGAND METAL COMPLEX DERIVATIVES, PREPARING METHOD THEREOF, AND PREPARING METHOD OF SILANE COMPOUND BY HYDROSILYLATION REACTION USING THE SAME AS CATALYST
申请人:Yoo Bok Ryul
公开号:US20110160454A1
公开(公告)日:2011-06-30
Provided are a saturated N-heterocyclic carbene-ligand metal complex derivative, a method for preparing the same, and a method for preparing a silane compound by hydrosilylation using the same as a catalyst. To describe in more detail, the metal complex derivative has a saturated N-heterocyclic carbene derivative and an olefin ligand at the same time. A silane compound is prepared by hydrosilylation in the presence of the metal complex derivative as a catalyst. The provided metal complex derivative of the present invention has superior stability during hydrosilylation reaction and is capable of effectively performing the hydrosilylation reaction at low temperature even with small quantity. Further, a product with superior regioselectivity may be obtained. In addition, after the hydrosilylation reaction is completed, the metal complex derivative may be recovered and recycled.