Acid-Catalyzed Intramolecular Imination / Nucleophilic Trapping of 4-Aminobutanal Derivatives: One-Pot Access to 2-(Pyrazolyl)pyrrolidines
作者:Andrey V. Smolobochkin、Tanzilya S. Rizbayeva、Almir S. Gazizov、Julia K. Voronina、Alexey B. Dobrynin、Anastasiya V. Gildebrant、Anna G. Strelnik、Ivan S. Sazykin、Alexander R. Burilov、Michail A. Pudovik、Marina A. Sazykina
DOI:10.1002/ejoc.201900868
日期:2019.9.8
A first successful synthesis of 2‐(pyrazolyl)pyrrolidines via a metal‐free approach is reported. The proposed approach relies on intramolecular imination / nucleophilic trapping of 4‐aminobutanal acetals with pyrazolones and provides easy entry to the previously unknown class of 2‐(hetaryl) substituted pyrrolidines.
Sulfonamido substituted acetal polymers and use thereof in
申请人:Sun Chemical Corporation
公开号:US05698360A1
公开(公告)日:1997-12-16
The present invention relates to binders and photosensitive compositions comprising said binders. The binder comprises units A, B, C and D, wherein A is present in an amount of 0.5 to 15 wt. % and is of the formula ##STR1## B is present in an amount of 10 to 35 wt. % and is of the formula ##STR2## C is present in an amount of 10 to 50 wt. % and is of the formula ##STR3## wherein R.sup.1 is methyl, ethyl, propyl or isopropyl, and D is present in an amount of 25 to 70 wt. % and is of the formula ##STR4## wherein n is an integer of from 1 to 3 and R.sup.2, R.sup.3 are hydrogen or methyl and R.sup.4 is alkyl, aralkyl or aryl.
Binders useful in photosensitive compositions contain units A, B, C and D, wherein A is present in an amount of 0.5 to 15 wt. % and is of the formula ##STR1## B is present in an amount of 10 to 35 wt. % and is of the formula ##STR2## C is present in an amount of 10 to 50 wt. % and is of the formula ##STR3## wherein R.sup.1 is methyl, ethyl, propyl, and D is present in an amount of 25 to 70 wt. % and is of the formula ##STR4## wherein n is an integer of from 1 to 3 and R.sup.2, R.sup.3 are hydrogen or methyl and R.sup.4 is alkyl, aralkyl or aryl.
Sulfonamido substituted acetal polymers and use thereof in photosensitive compositions and lithographic printing plates
申请人:SUN CHEMICAL CORPORATION
公开号:EP0757061A2
公开(公告)日:1997-02-05
The present invention relates to binders and photosensitive compositions comprising said binders. The binder comprises units A, B, C and D, wherein A is present in an amount of 0.5 to 15 wt.% and is of the formula
B is present in an amount of 20 to 35 wt.% and is of the formula
C is present in an amount of 20 to 50 wt.% and is of the formula
wherein R1 is methyl, ethyl, propyl or isopropyl, and D is present in an amount of 25 to 70 wt.% and is of the formula
wherein
n is an integer of from 1 to 3 and
R2, R3 are hydrogen or methyl and
R4 is alkyl, aralkyl or aryl.
本发明涉及粘合剂和包含所述粘合剂的感光组合物。粘合剂由 A、B、C 和 D 单元组成,其中 A 的含量为 0.5 至 15 wt.%,其结构式为
B 的含量为 20 至 35 wt.%,其结构式为
C 的含量为 20 至 50 wt.%,其式如下
其中 R1 为甲基、乙基、丙基或异丙基,D 的含量为 25 至 70 wt.%,其结构式为
其中
n 是 1 至 3 的整数,且
R2、R3 是氢或甲基,以及
R4 是烷基、芳基或芳基。