240113-82-0Relevant articles and documents
Platinum complex containing diphosphine meta-position carborane ligand and preparation method and application of platinum complex
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Paragraph 0031; 0035-0037; 0039; 0053-0057, (2021/04/17)
The invention relates to a platinum complex containing a diphosphine m-carborane ligand and a preparation method and application of the platinum complex, the method of the platinum complex comprises the following steps: reacting n-BuLi with m-carborane m-
Ruthenium-catalyzed intramolecular arene C(sp2)-H amidation for synthesis of 3,4-dihydroquinolin-2(1 H)-ones
Au, Chi-Ming,Ling, Cho-Hon,Sun, Wenlong,Yu, Wing-Yiu
supporting information, p. 3310 - 3314 (2021/05/29)
We report the [Ru(p-cymene)(l-proline)Cl] ([Ru1])-catalyzed cyclization of 1,4,2-dioxazol-5-ones to form dihydroquinoline-2-ones in excellent yields with excellent regioselectivity via a formal intramolecular arene C(sp2)-H amidation. The reactions of the 2- and 4-substituted aryl dioxazolones proceeds initially through spirolactamization via electrophilic amidation at the arene site, which is para or ortho to the substituent. A Hammett correlation study showed that the spirolactamization is likely to occur by electrophilic nitrenoid attack at the arene, which is characterized by a negative ρ value of -0.73.
Synthesis of Lactams via Ir-Catalyzed C-H Amidation Involving Ir-Nitrene Intermediates
Li, Xiaoxun,Liu, Jitian,Tang, Weiping,Wang, Shuojin,Ye, Wenjing,Zheng, Junrong
, (2020/03/19)
x-membered lactams were synthesized via either an amidation of sp3 C-H bonds or an electrophilic substitution of arenes via Ir-nitrene intermediates. With the employment of a readily available iridium catalyst in dichloromethane or hexafluoro-2-propanol, a wide range of lactams were synthesized in good to excellent yields with high selectivity.
NEGATIVE TYPE PHOTOSENSITIVE SILOXANE COMPOSITION AND METHODS FOR PRODUCING CURED FILM AND ELECTRONIC DEVICE USING THE SAME
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Paragraph 0111-0113, (2020/11/29)
[Object] To provide a negative type photosensitive siloxane composition capable of forming a cured film excellent in heat resistance and critical thickness for cracking [Means] The present invention provides a negative type photosensitive siloxane composition comprising : a polysiloxane containing silanol in a specific content, a particular photo base generator, and a solvent. The content of silanol is measured by FT-IR.
Radical-induced expeditious stereoselective synthesis of 2-alkyl 3-allyl trans-2,3-dihydrobenzofurans (TADHBs)
Sarkar, Debayan,Sahoo, Sushree Ranjan
, p. 574 - 581 (2018/02/06)
A thorough study on radical-induced cyclopropyl ring fragmentation with encompassed olefinic and cyclopropane environment has been performed. Interestingly, the fragmentation has occasioned onto a stereoselective synthesis of 3-allyl trans-2,3-dihydrobenzofurans with impressive yields. The trans-dihydrobenzofurans are present as central core in many molecules of medicinal interest and the present protocol deliver a straight forward access to the embedded molecular architecture.
Ortho-dearomatization of phenols creating all-carbon spiro-bicycles
Zheng, Chao,Wang, Lu,Li, Jingjie,Wang, Leifeng,Wang, David Zhigang
supporting information, p. 4046 - 4049 (2013/09/12)
A range of alkene-linked phenols are generally and reliably dearomatized specifically at their ortho-positions to create all-carbon quaternary stereogenic centers at the corresponding spiro-ring junctions, thus establishing a viable solution to the long-standing synthetic challenge.
Prenylcoumarin with Rev-export inhibitory activity from Cnidii Monnieris Fructus
Tamura, Satoru,Fujitani, Toshiaki,Kaneko, Masafumi,Murakami, Nobutoshi
scheme or table, p. 3717 - 3720 (2010/09/05)
By use of the fission yeast expressing the model fusion protein comprised of GST, SV40 T antigen NLS, GFP, and Rev-NES in the bioassay, the prenylcoumarin osthol (1) was disclosed as the new Rev-export inhibitor from the MeOH extract of Cnidii Monnieris Fructus. Furthermore, 1 was also found to inhibit export the genuine Rev in HeLa cells by indirect fluorescent antibody technique. By the competitive experiment using the biotinylated probe 3, osthol (1) was revealed to inhibit nuclear export of Rev through a NES non-antagonistic mode. Structure-activity relationship analysis of several analogs of 1 clarified that both prenyl side chain and double bond adjacent to the lactone carbonyl residue play an important role in the Rev-export inhibitory potency of 1.