Chieh Chieh Wang

Bio: Chieh Chieh Wang is an academic researcher from National Taiwan Normal University. The author has contributed to research in topics: Indole test & Ketone. The author has an hindex of 4, co-authored 6 publications receiving 260 citations.

Molecular Iodine: A Powerful Catalyst for the Easy and Efficient Synthesis of Quinoxalines.

Abstract: Various biologically important quinoxaline derivatives were efficiently synthesized in excellent yields using inexpensive, nontoxic, and readily available bench top chemical, iodine in catalytic amount (10 mol %). Besides this, a systematic study was carried out to evaluate parameters such as solvent and catalyst loading. Several aromatic as well as aliphatic 1,2-diketones and aromatic 1,2-diamines, such as substituted phenylene diamines, tetra amines were further subjected to condensation using catalytic amounts of iodine to afford the products in excellent yield.

Straightforward and Highly Efficient Catalyst-Free Regioselective Reaction of Thiol to β-Nitrostyrene: A Concise Synthesis of Vinyl Sulfide and Nitro Sulfide.

Abstract: Under catalyst-free reaction conditions, solvent-mediated addition of thiol 2 to β-nitrostyrene 1 proceeded with regioselective control to afford either adduct 3 or vinyl sulfide 4 in good to excellent yield. Thermodynamic and autocatalytic reaction mechanisms were proposed to rationalize the products thus formed.

Catalytic Functionalization of Indoles in a New Dimension

Abstract: 140 years ago Adolf von Baeyer proposed the structure of a heteroaromatic compound which revolutionized organic and medical chemistry: indole. After more than a century, indole itself and the complexity of naturally occurring indole derivatives continue to inspire and influence developments in synthetic chemistry. In particular, the ubiquitous presence of indole rings in pharmaceuticals, agrochemicals, and functional materials are testament to the ever increasing interest in the design of mild and efficient synthetic routes to functionalized indole derivatives. This Review emphasizes the achievements in the selective catalytic functionalization of indoles (C-C bond-forming processes) over the last four years.

Cerium(IV) ammonium nitrate--a versatile single-electron oxidant.

Abstract: 3.1. Carbon−Nitrogen Bond Formation 14 3.1.

Katalytische Funktionalisierung von Indolen in einer neuen Dimension

Abstract: Vor 140 Jahren schlug Adolf von Baeyer die Struktur fur eine heteroaromatische Verbindung vor, die die organische und medizinische Chemie nachhaltig veranderte: Indol. Nach mehr als einem Jahrhundert beeinflussen Indol selbst, ebenso wie naturliche Indolderivate, weitgehend die Entwicklung in der Synthesechemie. Vor allem die allgegenwartige Prasenz des Indolrings in pharmazeutischen und agrochemischen Verbindungen sowie seine Verwendung in der Materialchemie sind ausschlaggebend fur das anhaltende Interesse an der Entwicklung von neuen milden und effizienten Synthesestrategien fur funktionalisierte Indolderivate. Dieser Aufsatz fasst die Fortschritte hinsichtlich der selektiven katalytischen Funktionalisierung von Indolen (durch C-C-Kupplung) aus den vergangenen vier Jahre zusammen.