4H-thieno[3,4-c]pyrrole: synthesis and characterization of the parent ring system
作者:Chin-Kang Sha、Chiu-Peng Tsou、Sue-Lein Wang
DOI:10.1039/c39880000320
日期:——
4H-Thieno[3,4-c]pyrrole (4) was synthesised from the azide (8) by intramolecular 1,3-dipolar cycloaddition followed by acid-catalysed 1,3-dipolar cycloreversion of the dihydrotriazole intermediate (9); the crystal structure of one of the products formed on trapping (4) with N-phenylmaleimide has been determined.
通过分子内的1,3-偶极环加成,然后酸催化的二氢三唑中间体(9),由叠氮化物(8)合成4 H-噻吩并[3,4- c ]吡咯(4);已经确定了用N-苯基马来酰亚胺捕获(4)时形成的产物之一的晶体结构。
Sha Chin-Kang, Tsou Chiu-Peng, J. Chem. Soc. Perkin Trans. 1, (1994) N 21, S 3065-3070
作者:Sha Chin-Kang, Tsou Chiu-Peng
DOI:——
日期:——
SHA, CHIN-KANG;TSOU, CHIU-PENG;WANG, SUE-LEIN, J. CHEM. SOC. CHEM. COMMUN.,(1988) N 4, 320-322
作者:SHA, CHIN-KANG、TSOU, CHIU-PENG、WANG, SUE-LEIN
DOI:——
日期:——
TREATING SOLUTION FOR ELECTRONIC PARTS, AND PROCESS FOR PRODUCING ELECTRONIC PARTS
申请人:FINE POLYMERS CORPORATION
公开号:US20150279654A1
公开(公告)日:2015-10-01
The invention provides an aqueous solution capable of selectively protecting a nitrogen-containing silicon compound from corrosion by a treating solution for etching, cleaning or the like, etching oxygen-containing, carbon-containing silicon in particular, and making a large etch rate difference between a nitrogen-containing silicon compound and an oxygen-containing silicon compound, and a process for producing electronic parts as well.
The invention is embodied by a treating solution for electronic parts that is an aqueous solution containing one or two or more of anionic surface active agents represented by the following formulae (1), (2) and (3), and a process for producing an electronic part.
wherein R
1
, R
2
, and R
3
stands for hydrogen or an alkyl or alkylene group having 1 to 4 carbon atoms, and X
1
stands for a functional group capable of becoming an anionic ion.
wherein R
4
stands for hydrogen or an alkyl or alkylene group having 1 to 4 carbon atoms, X
2
stands for a functional group capable of becoming an anionic ion, and n stands for a natural number of greater than 2.
wherein R
5
stands for hydrogen or an alkyl or alkylene group having 1 to 4 carbon atoms, and X
3
, and X
4
stands for a functional group capable of becoming an anionic ion.