ALKALI-DEVELOPABLE PHOTOSENSITIVE RESIN COMPOSITION AND BETA-DIKETONE COMPOUND
申请人:Yamada Takashi
公开号:US20100129753A1
公开(公告)日:2010-05-27
An alkali developable photosensitive resin composition contains (J) a photopolymerizable unsaturated compound having a structure resulting from the addition reaction of (B) a compound having a β-diketone moiety or a compound having a β-ketoester group to the (meth)acryloyl group of (A) a compound having at least two (meth)acryloyl groups and a hydroxyl group and subsequent esterification of the hydroxyl group of the resulting addition product with (C) a polybasic acid anhydride. The compound having a β-diketone moiety is preferably a novel β-diketone compound represented by general formula (I):
wherein R
1
is a C1-C20 alkyl group; R
2
represents R
11
, OR
11
, COR
11
, SR
11
, CONR
12
R
13
, or CN; R
11
, R
12
, and R
13
are each hydrogen, a C1-C20 alkyl group, etc.; a is 0 to 3; and b is 0 to 4.
Michael Acceptor Having Multiple Hydroxyl Groups, and Michael Addition Product Derived Therefrom
申请人:Korea Research Institute of Chemical Technology
公开号:US20130331600A1
公开(公告)日:2013-12-12
Provided is a Michael addition product prepared from a multifunctional acryl monomer having multiple hydroxyl groups allowing introduction of acryl functional groups, as a Michael acceptor, and a Michael donor. The Michael addition product is a novel multifunctional compound having an oligomer and a photoinitiator moiety in the molecule. Since it can be cured under a standard UV curing condition without having to add a photoinitiator, it is reduced to air pollution or health problem. Therefore the superior physical properties were obtained by cured coatings without surface tackiness. In addition, its hydroxyl groups allow, through isocyanate bonding or introduction of acryl groups, 3-dimensional crosslinking and molecular and compositional design for improving expandability, friction, and reactivity and hydrophilicity for self-adhesion, hardness of cured film, or the like. Consequently, a very useful, multifunctional or water-dispersible coating composition may be prepared.
Iminium Catalysis inside a Self-Assembled Supramolecular Capsule: Modulation of Enantiomeric Excess
作者:Thomas M. Bräuer、Qi Zhang、Konrad Tiefenbacher
DOI:10.1002/anie.201602382
日期:2016.6.27
The noncovalent combination of a supramolecular host with iminiumorganocatalysis is described. Due to cation–π interactions the reactiveiminium species is held inside the host and reacts in this confined environment. The products formed differ up to 92 % ee from the control experiments without added host. A model rationalizing the observed difference is presented.
Synthesis of Fatty Acetoacetates Under Microwave Irradiation Catalysed by Sulfamic Acid in a Solvent-Free System
作者:Andressa C. H. Weber、Thaís C. Batista、Bruno Gonçalves、Carolina R. L. Hack、Larissa M. Porciuncula、Tamara G. M. Treptow、Caroline Da R. Montes D'Oca、Dennis Russowsky、Marcelo G. Montes D'Oca
DOI:10.1007/s11746-016-2879-5
日期:2016.10
The 1,3‐dicarbonyl compounds are important building blocks to obtain products with various biologicalactivities and technological applications. In this work, we used a simple transesterification method to develop fatty acetoacetates in a solvent‐free medium using a green catalyst, sulfamic acid (NH2SO3H), under microwave irradiation. The experimental results demonstrate good yields in a short reaction
1,3-二羰基化合物是获得具有各种生物活性和技术应用产品的重要组成部分。在这项工作中,我们使用一种简单的酯交换方法,在无溶剂的介质中,使用绿色催化剂氨基磺酸(NH 2 SO 3 H),在微波辐射下开发了乙酰乙酸脂肪酯。实验结果表明,在短的反应时间(13分钟)内具有良好的收率,这使该方法成为从多种饱和,不饱和和多不饱和长链脂肪醇和蓖麻油酸衍生物合成脂肪族乙酰乙酸酯的有效方法。进行了催化剂再循环的实验,未观察到氨基磺酸的催化活性降低。
Evaluation of alcohols as substrates for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones under environmentally friendly conditions
The aim of this research was to develop a procedure for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones under environmentally friendly conditions using alcohols as the starting materials in aqueous media. The developed protocol resulted in 3,4-dihydropyrimidin-2(1H)-ones derivatives, which are relevant intermediates with therapeutic and pharmacological properties. Target products were synthetized