N-Alkyl-N′-tosylhydrazines with Hg(OAc)2 in the presence of alcohols or phenol give high yields of corresponding ethers. Reactions in the presence of acetic acid are also examined.
various aryl as well as heteroaryl halides underligand-freeconditions are reported. This protocol provides a variety of diaryl ether and bis-diaryl ether motifs by reacting different aryl/aliphatic halides with differently substituted phenols and saturated alcohols in the presence of a catalytic amount of CuO on alumina and KOH as a base at moderate temperature under nitrogen atmosphere. The described methodology
Dialky alkoxy phenyl sulfonium salt cationic initiators
申请人:ISP Investments, Inc.
公开号:US05274148A1
公开(公告)日:1993-12-28
This invention relates to C.sub.14 to C.sub.20 alkoxy monophenyl sulfonium salt initiators having the formula ##STR1## wherein R is C.sub.14 to C.sub.20 alkyl; R.sub.1 and R.sub.2 are each independently C.sub.4 to C.sub.20 alkyl and X.sup.- is a non-basic, nonnucleophilic anion, which initiators are employed in the polymerization of mono- and poly- functional glycidyl ethers, alpha-olefin oxides and vinyl monomers or oligomers.
CATALYST COMPOSITION AND PROCESS FOR PRODUCTION OF OLEFIN POLYMERS USING THE CATALYST COMPOSITION
申请人:Yabukami Minoru
公开号:US20130102745A1
公开(公告)日:2013-04-25
The present invention provides a catalyst composition and a method for producing an olefin polymer using the catalyst composition. The catalyst composition is prepared by bringing (A) a transition metal compound, (B) a solid boron compound capable of forming an ion pair with the component (A), (C) an organometallic compound and (D) a compound represented by the following general formula (XIV) and/or the following general formula (XV) into contact with each other in a hydrocarbon solvent, and enables a high catalyst concentration.
Z
5
R
14
R
15
(XIV)
Z
6
R
14
R
15
R
16
(XV)
[In the formulae, Z
5
represents an oxygen atom, etc.; Z
6
represents a nitrogen atom, etc.; R
14
to R
16
each independently represent an organic group, and at least one of those organic groups is an organic group having at least 3 carbon atoms, and R
14
to R
16
may bond to each other to form a ring.]
Photographic material suited for use in diffusion transfer photography
申请人:AGFA-GEVAERT
naamloze vennootschap
公开号:EP0038092A1
公开(公告)日:1981-10-21
A photographic material for diffusion transfer photography containing a quinonoid compound, which is capable in reduced state and under alkaline conditions of releasing a photographically useful group and corresponds to one of the following general formulae:
wherein:
each of (Nuox)' and (Nuox)2 (same or different) represents an oxidized nucleophilic group,
Z represents a bivalent atom or bivalent atomic group, which is electro-negative,
Q together with the group Z represents a releasable photographically useful group,
Y' and Y2 together represent the necessary atoms to close a p-quinonoid ring substituted with (a) directly linked monovalent organic ring or ring system substituent(s) having aromatic character,
Y' represents the necessary atoms to close a o-quinonoid ring substituted with (a) directly linked monovalent organic ring or ring system substituent(s) having aromatic character, and
each of R' and R' (same or different) represents hydrogen or a (substituted) hydrocarbon group, and at least one of R', R' and a substituent on the quinonoid ring being or carrying a ballasting group.
一种用于扩散转移摄影的感光材料,含有醌类化合物,在还原状态和碱性条件下能释放出对摄影有用的基团,并符合以下通式之一:
其中
(Nuox)'和 (Nuox)2(相同或不同)中的每一个代表一个氧化亲核基团、
Z 代表负电性的二价原子或二价原子团、
Q 与基团 Z 一起代表可释放的摄影用基团、
Y'和 Y2 共同代表关闭被(a)具有芳香特性的直接相连的一价有机环或环系取代基取代 的对醌环所需的原子、
Y' 代表关闭被具有芳香性质的(a)直接相连的一价有机环或环系取代基取代的邻 喹啉环所需的原子,以及
R'和 R'(相同或不同)各自代表氢或(取代的)烃基,R'、R'和喹啉环上的取代基中至少有一个是或带有压载基。