AMIDINE GROUP - OR GUANIDINE GROUP - CONTAINING SILANE
申请人:SIKA TECHNOLOGY AG
公开号:US20170081348A1
公开(公告)日:2017-03-23
A silane of the formula (I) containing at least one aliphatic amidine group- or guanidine group-containing alkoxy group, to a method for producing same, to conversion products thereof, and to the use thereof as a catalyst in curable compositions, in particular based on silane group-containing polymers. The silane of the formula (I) is largely odorless and non-volatile at room temperature. The silane accelerates the hydrolysis and condensation reaction of silane groups very effectively without impairing the storage stability of silane group-containing polymers. Additionally, the silane is very tolerable in silane group-containing compositions, whereby such compositions are not prone to separate, migrate, or evaporate the catalyst.
ELECTROLYTE SALT AND ELECTROLYTE FOR ELECTRICITY STORAGE DEVICE, AND ELECTRICITY STORAGE DEVICE
申请人:NISSHINBO HOLDINGS INC.
公开号:US20150291633A1
公开(公告)日:2015-10-15
Provided is an electrolyte salt comprising a quaternary ammonium cation indicated by formula (1) and a trimethylsilyl alkanesulfonate anion indicated by formula (2).
(In the formula, R
1
-R
4
each independently indicate a C1-4 alkyl group or an alkoxyalkyl group indicated by —(CH
2
)
n
—OR. Any two among R
1
-R
4
can mutually bond and form a ring together with a nitrogen atom to which same have bonded. The remaining two can mutually bond and form a spiro ring having a nitrogen atom as the spiro atom therefor. R indicates a methyl group or an ethyl group. n indicates 1 or 2 and m indicates 2 or 3.)
Synthesis of Water‐Soluble Blue‐Emissive Tricyclic 2‐Aminopyridinium Salts by Three‐Component Coupling‐(3+3)‐Anellation
作者:Olga Bakulina、Franziska K. Merkt、Tim‐Oliver Knedel、Christoph Janiak、Thomas J. J. Müller
DOI:10.1002/anie.201808665
日期:2018.12.21
The (3+3) anellation of alkynones and cyclic amidines is a novel and unexpected approach to generate intensively blue luminescent tricyclic 2‐aminopyridinium salts with quantum yields Φf up to 63 % in water. By implementation into a consecutive three‐component reaction, these title compounds are obtained rapidly and efficiently in a diversity‐oriented fashion. Most interestingly, these bi‐ and tricyclic
Reactions of 2-Methyl- and 1,2-Dimethyl-1,4,5,6-tetrahydropyrimidine with Aroyl Chlorides: Diverse Reactivities of Cyclic Ketene N,N′-Acetals Generated in situ
作者:Charles Pittman Jr.、Guozhong Ye、Sabornie Chatterjee、Aihua Zhou、Bobby Barker、Chunlong Chen、Yingquan Song
DOI:10.1055/s-0029-1218670
日期:2010.4
N′-diaroyl cyclic ketene N,N-acetals that are inert to excess aroyl chlorides. No carbon-carbon bond was formed in these reactions. Conversely, 1,2-dimethyl-1,4,5,6-tetrahydropyrimidine reacted with three equivalents of aroyl chloride under the same conditions to give N-aroyl N′-methyl β,β-dioxo cyclic ketene N,N′-acetals, with formation of two carbon-carbonbonds. Various reactions of cyclic amidines
Push–pull alkenes by reacting N,N′-dimethyl cyclic ketene N,N′-acetals with isocyanates: synthesis, structures, and reactivities
作者:Guozhong Ye、William P. Henry、Chunlong Chen、Aihua Zhou、Charles U. Pittman
DOI:10.1016/j.tetlet.2009.02.160
日期:2009.5
N,N′-Dimethyl cyclic ketene N,N′-acetals react with two or three equivalents of isocyanates to generate tetrasubstituted push–pull alkene derivatives in one-pot sequential reactions. X-ray crystallography showed significant elongations and out of plane distorsions of the polarized carbon–carbon double bonds.