Sc(OTf)3-Catalyzed [3 + 3] Cycloaddition of Cyclopropane 1,1-Diesters with Phthalazinium Dicyanomethanides
摘要:
The Sc(OTf)(3)-catalyzed diastereoselective [3 + 3] cycloaddition of phthalazinium dicyanomethanides with cyclopropane 1,1-diesters proceeded smoothly under mild reaction conditions, affording a variety of 3,4-dihydro-1H-pyrido[2,1-a]phthalazine derivatives in up to 99% yields with excellent diastereoselectivities.
New synthetic approach to benzo/f/- and benzo/g/- phthalazines
作者:Stefan K. Robev
DOI:10.1016/s0040-4039(01)92421-9
日期:1981.1
Benzo/f/- and benzo/g/- phthalazine derivatives were synthesised from 2-naphthaldazine by means of a Lewis acid mediated cyclization with elimination of naphthalene.
苯并/ f /-和苯并/ g /-酞嗪衍生物是通过路易斯酸介导的环化作用并消除萘而由2-萘哒嗪合成的。
Non-Precious Metals Catalyze Formal [4 + 2] Cycloaddition Reactions of 1,2-Diazines and Siloxyalkynes under Ambient Conditions
作者:Chintan S. Sumaria、Yunus E. Türkmen、Viresh H. Rawal
DOI:10.1021/ol501254h
日期:2014.6.20
Copper(I) and nickel(0) complexes catalyze the formal [4 + 2] cycloaddition reactions of 1,2-diazines and siloxyalkynes, a reaction hitherto best catalyzed by silver salts. These catalysts based on earth abundant metals are not only competent, but the copper catalyst, in particular, promotes cycloadditions of pyrido[2,3-d]pyridazine and pyrido[3,4-d]pyridazine, enabling a new synthesis of quinoline
铜 (I) 和镍 (0) 配合物催化 1,2-二嗪和甲硅烷氧基炔烃的正式 [4 + 2] 环加成反应,该反应迄今为止最好由银盐催化。这些基于富含地球的金属的催化剂不仅有能力,而且铜催化剂,特别是促进吡啶并[2,3- d ]哒嗪和吡啶并[3,4- d ]哒嗪的环加成,使喹啉和异喹啉衍生物,以及环己烯酮与甲硅烷氧基炔烃的正式 [2 + 2] 环加成反应。
POLYMERIZABLE COMPOUND AND OPTICAL ISOMER
申请人:DIC Corporation
公开号:US20180022716A1
公开(公告)日:2018-01-25
The present invention provides a polymerizable compound having high storage stability without causing crystal precipitation when added to a polymerizable composition. The present invention also provides a polymerizable composition containing the compound. When the filmy polymer produced through polymerization of the polymerizable composition is irradiated with UV light, it hardly discolors or peels from substrate. Further, the present invention provides a polymer produced through polymerization of the polymerizable composition and an optically anisotropic body using the polymer.
[2+2+2] Cycloadditions of Siloxy Alkynes with 1,2-Diazines: From Reaction Discovery to Identification of an Antiglycolytic Chemotype
作者:Timothy J. Montavon、Yunus E. Türkmen、Noumaan A. Shamsi、Christopher Miller、Chintan S. Sumaria、Viresh H. Rawal、Sergey A. Kozmin
DOI:10.1002/anie.201305711
日期:2013.12.16
Cycloaddition uncovered: The title reaction produces novel polycyclic compounds with high efficiency and excellent diastereoselectivity under mild reaction conditions. A small‐molecule library, synthesized using this reaction, yielded a novel chemotype which inhibited glycolytic ATP production by blocking glucose uptake in CHO‐K1 cells. DMF=N,N‐dimethylformamide, Tf=trifluoromethanesulfonyl, TIPS=triisopropylsilyl
未发现环加成反应:在温和的反应条件下,标题反应产生了高效且具有优异非对映选择性的新型多环化合物。使用该反应合成的小分子文库产生了一种新的化学型,该化学型通过阻断 CHO-K1 细胞中的葡萄糖摄取来抑制糖酵解 ATP 的产生。DMF= N,N-二甲基甲酰胺,Tf=三氟甲磺酰基,TIPS=三异丙基甲硅烷基。
POLYMERIZABLE COMPOUND AND OPTICALLY ANISOTROPIC BODY
申请人:DIC Corporation
公开号:US20180002276A1
公开(公告)日:2018-01-04
In light of requests to reduce or reverse the wavelength dispersion of the birefringence of a phase-retardation film in order to increase the viewing angle of a liquid crystal display, the present invention provides a polymerizable compound that reduces, for example, the likelihood of crystals precipitating in a polymerizable composition including the polymerizable compound and enables the polymerizable composition to have high preservation stability and a polymerizable composition including the polymerizable compound which reduces the likelihood of inconsistencies being formed in a film-like polymer produced by polymerizing the polymerizable composition. Another object of the present invention is to provide a polymer produced by polymerizing the polymerizable composition and an optically anisotropic body including the polymer.