The Optimization for Cyclization Reaction of 2-(2-Carbomethoxyethynyl)aniline Derivatives and Formal Synthesis of Pyrroloquinoline Quinone and Its Analogue Utilizing a Sequential Coupling-Cyclization Reaction.

ChemInform ◽  
2006 ◽  
Vol 37 (19) ◽  
Author(s):  
Kou Hiroya ◽  
Shigemitsu Matsumoto ◽  
Masayasu Ashikawa ◽  
Hitomi Kida ◽  
Takao Sakamoto
Keyword(s):  
Pyrroloquinoline Quinone ◽  
Cyclization Reaction ◽  
Formal Synthesis ◽  
Aniline Derivatives ◽  
Sequential Coupling

Synthesis of 4-Vinyl-1,2,3,4-tetrahydroisoquinoline from N-Tethered Benzyl-Alkenol Catalyzed by Indium(III) Chloride: Formal Synthesis of (±)-Isocyclocelabenzine

Synthesis ◽  
2020 ◽  
Vol 52 (09) ◽  
pp. 1425-1434 ◽  
Author(s):  
Anil K. Saikia ◽  
Ngangbam Renubala Devi ◽  
Sudip Shit ◽  
Bipin Kumar Behera
Keyword(s):  
Functional Groups ◽  
Cyclization Reaction ◽  
Piperidine Ring ◽  
Formal Synthesis ◽  
Wide Range

An intramolecular Friedel–Crafts cyclization reaction catalyzed by indium(III) chloride for the formation of 4-vinyl-1,2,3,4-tetrahydroisoquinoline from N-tethered benzyl-alkenol in good yields has been described. The reaction is highly regioselective and generates an exocyclic vinyl functionality in the piperidine ring. The reaction is compatible with a wide range of functional groups. The strategy is demonstrated for the formal synthesis of (±)-isocyclocelabenzine alkaloid.

ChemInform Abstract: A Formal Synthesis of (+)-α-Allokainic Acid via Sulfanyl Radical Addition-Cyclization Reaction.

ChemInform ◽  
2010 ◽  
Vol 29 (16) ◽  
pp. no-no
Author(s):  
O. MIYATA ◽  
Y. OZAWA ◽  
I. NINOMIYA ◽  
K. AOE ◽  
H. HIRAMATSU ◽  
...  
Keyword(s):  
Radical Addition ◽  
Cyclization Reaction ◽  
Formal Synthesis

A Formal Synthesis of Komaroviquinone: Use of a Pt-Catalyzed Hydrative Cyclization Reaction

2016 ◽  
Vol 5 (10) ◽  
pp. 1237-1241 ◽  
Author(s):  
Chang Ho Oh ◽  
Lanhua Piao ◽  
Jaemun Jung ◽  
Jaewoong Kim
Keyword(s):  
Cyclization Reaction ◽  
Formal Synthesis ◽  
Pt Catalyzed

A Formal Synthesis of (+)-a-Allokainic Acid via Sulfanyl Radical Addition-Cyclization Reaction

Heterocycles ◽  
1997 ◽  
Vol 46 (1) ◽  
pp. 321 ◽  
Author(s):  
Takeaki Naito ◽  
Okiko Miyata ◽  
Yoshiki Ozawa ◽  
Ichiya Ninomiya ◽  
Keiichi Aoe ◽  
...  
Keyword(s):  
Radical Addition ◽  
Cyclization Reaction ◽  
Formal Synthesis

Carbon Chain Growth by Sequential Reactions of CO and CO2 with a Transition Metal Carbonyl Complex

2018 ◽  
Author(s):  
Richard Kong ◽  
Mark Crimmin
Keyword(s):  
Transition Metal ◽  
Metal Carbonyl ◽  
Carbon Chain ◽  
Chain Growth ◽  
Carbonyl Complex ◽  
Fischer Tropsch ◽  
Carbon Chains ◽  
Sequential Coupling ◽  
Energy Economy ◽  
Sequential Reactions

<i>The formation of carbon chains by the coupling of COx (X = 1 or 2) units on transition metals is a fundamental step relevant to Fischer-Tropsch catalysis. Fischer-Tropsch catalysis produces energy dense liquid hydrocarbons from synthesis gas (CO and H2) and has been a mainstay of the energy economy since its discovery nearly a century ago. Despite detailed studies aimed at elucidating the steps of catalysis, experimental evidence for chain growth (Cn to Cn+1 ; n > 2) from the reaction of CO with metal complexes is unprecedented. In this paper, we show that carbon chains can be grown from sequential reactions of CO or CO2 with a transition metal carbonyl complex. By exploiting the cooperative effect of transition and main group metals, we document the first example of chain propagation from sequential coupling of CO units (C1 to C3 to C4), along with the first example of incorporation of CO2 into the growing carbon chain.</i><br>

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