报道了一种由宝石-二溴乙烯基和磺酰胺合成吡咯并//吲哚并[1,2- a ]喹啉和萘并[2,1- b ]噻吩的高效简单途径。该报告的值得注意的特点是该方法涉及两步协议,即通过一锅法通过Cu(I)催化的乙酰胺的形成,然后由Ag(I)辅助的分子内合成三环和四环杂环。氢芳基化。还研究了在固态和溶液态的吡咯并-和吲哚并[1,2- a ]喹啉的代表性实例的光物理性质。
Regioselective Synthesis of Diversely Substituted Diazoninones Through a Post-Ugi Gold-Catalyzed Intramolecular Hydroarylation Process
作者:Zhenghua Li、Amit Kumar、Dipak D. Vachhani、Sunil K. Sharma、Virinder S. Parmar、Erik V. Van der Eycken
DOI:10.1002/ejoc.201301507
日期:2014.4
A highly efficient approach for the regioselective construction of fused nine-membered rings (diazoninone framework) was developed by employing sequential Ugi and gold-catalyzed intramolecular hydroarylation reactions. The scope of this intramolecular cyclization has been demonstrated.
通过采用连续的 Ugi 和金催化的分子内加氢芳基化反应,开发了一种用于区域选择性构建稠合九元环(重氮酮骨架)的高效方法。已经证明了这种分子内环化的范围。
Silver-Catalyzed Intramolecular C-2 Selective Acylation of Indoles with Aldehydes: An Atom-Economical Entry to Indole-Indolone Scaffolds
A direct annulation reaction of N‐(2‐formylaryl)indoles has been developed, which can provide a new entry to biologically and medicinally important indole‐indolone scaffolds via a silver‐catalyzed direct oxidative coupling between aldehydeCH and sp2CH bonds for the first time. Remarkably, this strategy displayed excellent functional group compatibilities, thereby suggesting its wide potential for
Novel benzoic acid derivatives have the formula: ##STR1## wherein --X-- represents C.sub.1 to C.sub.6 alkylene, C.sub.2 to C.sub.6 alkenylene or a divalent moiety having the structure --(CH.sub.2).sub.m --Z-- in which m is an integer from 0 to 3 and Z represents --O--, --S-- or --NH--; --Y-- represents a direct bond, C1 to C.sub.6 alkylene, C.sub.2 to C.sub.6 alkenylene or a divalent moiety having the structure --(CH.sub.2).sub.m --Z--(CH.sub.2).sub.n in which m and n are each, independently, an integer from 0 to 3 and --Z-- represents --O--, --S-- or --NH--; R represents a 5- or 6-membered carbocyclic or heterocyclic ring or a carbocyclic or heterocyclic fused ring system containing up to 10 members in the ring, which carbocyclic, heterocyclic or fused ring system may be saturated or unsaturated and may contain up to two substituents selected from lower alkyl, methoxy, halo and trifluoromethyl; and R.sup.1 and R.sup.2 are each, independently, selected from hydrogen, lower alkyl, methoxy, halo and trifluoromethyl. The benzoic acid derivates are useful as anti-inflammatory agents.
Tandem Pd-Catalyzed Double C−C Bond Formation: Effect of Water
作者:David I. Chai、Mark Lautens
DOI:10.1021/jo900053b
日期:2009.4.17
A highly efficient water-accelerated palladium-catalyzed reaction of gem-dibromoolefins with a boronicacid via a tandem Suzuki−Miyaura coupling and direct arylation is reported. A wide range of aryl, alkenyl, and alkyl boronicacids, as well as a variety of substitution patterns on the phenyl ring, are tolerated. Additionally, mechanistic studies were conducted to ascertain the order of the couplings
pyrroloazaphosphinines with nitrogen at the junction, 7a and 7b, were prepared by collapsing the phosphorus bridges of appropriate 7‐phosphanorbornenes. Compound 7a reacts with CuI to give polymeric complex [–Cu‐µ2‐7a–]n in which P acts as a bridging ligand. Compound 7b has a skewed ring, and its more reactive P=C double bond gives a [2+4] cycloadduct with 2,3‐dimethylbutadiene and a MeOH addition product