Exploring the Border between Concerted and Two-Step Pathways of 1,3-Dipolar Cycloadditions of Organic Azides to Cyclic Ketene N,X-Acetals. - Synthesis and15N-NMR Spectra of Zwitterions and Spirocyclic Cycloadducts
CyclicketeneN,X-acetals 1 are electron-rich dipolarophiles that undergo 1,3-dipolar cycloaddition reactions with organicazides 2 ranging from alkyl to strongly electron-deficient azides, e.g., picryl azide (2L; R1=2,4,6-(NO2)3C6H2) and sulfonyl azides 2M–O (R1=XSO2; cf. Scheme 1). Reactions of the latter with the most-nucleophilic keteneN,N-acetals 1A provided the first examples for two-step H
环烯酮N,X-乙缩醛1是富含电子的双亲亲子,与有机叠氮化物2发生1,3-偶极环加成反应,有机叠氮化物2的烷基化程度强至电子缺乏性叠氮化物,例如吡啶甲基叠氮化物(2L ; R 1 = 2,4, 6-(NO 2)3 C 6 H 2)和磺酰叠氮化物2M – O(R 1 = XSO 2;参见方案1)。后者与亲核性最强的乙烯酮N,N-缩醛1A的反应提供了一种用于两步骤HOMO(亲偶极)-LUMO(1,3-偶极子)的第一实施例-controlled 1,3-偶极环加成经由中间两性离子3。为了为探索这种类型的协同步骤和两步式1,3-偶极环加成之间的边界奠定基础,我们首先描述了2到1的协同环加成的范围和局限性,并描述了两性离子3。烷基叠氮化物2A – C仅添加到由1 H-四唑(参见1A)和1 H-咪唑(参见1B,C)衍生的乙烯酮N,N-缩醛中),而几乎所有的芳基叠氮化物都使用烯酮N,X-乙缩醛(X = NR,O,S)生成环加合物4,但1
Cationic heteroarylazine dyes and colorants containing these compounds
申请人:Speckbacher Markus
公开号:US20070174975A1
公开(公告)日:2007-08-02
Cationic heteroarylazine dyes of general formulas (I) and (II)
and colorants for keratin fibers containing these compounds.
含有阳离子杂环偶氮染料通式(I)和(II)的角蛋白纤维染料。
Cationic azo azine dyes and colorants that contain these compounds
申请人:Speckbacher Markus
公开号:US20070073045A1
公开(公告)日:2007-03-29
The objects of the present invention are novel cationic azo azine dyes of the generic formula (I),
as well as colorants for keratin fibers that contain these compounds.
本发明的对象是一种新型的阳离子偶氮偶氮染料,其通式为(I),以及含有这些化合物的角蛋白纤维染料。
US20140275169A1
申请人:——
公开号:US20140275169A1
公开(公告)日:2014-09-18
COMPOSITION FOR FORMING PATTERN, KIT, CURED FILM, LAMINATE, PATTERN PRODUCING METHOD, AND METHOD FOR MANUFACTURING SEMICONDUCTOR ELEMENT
申请人:FUJIFILM Corporation
公开号:US20220009153A1
公开(公告)日:2022-01-13
Provided are: a composition for forming a pattern, which contains a polymerizable compound, a photopolymerization initiator, and a sensitizer containing two or more of at least one kind of atom selected from the group consisting of a nitrogen atom and a sulfur atom, in which a length of a specific atom chain from one atom to another atom among the two or more atoms is 2 or 3 in terms of the number of atoms; a kit to which the composition for forming a pattern is applied; a cured film; a laminate; a pattern producing method; and a method for manufacturing a semiconductor element.