scholarly journals Halogenation Reaction of Purpurin-18 and Synthesis of Chlorin Derivatives

2012 ◽  
Vol 32 (03) ◽  
pp. 544 ◽  
Author(s):  
Ranran Liu ◽  
Jungang Yin ◽  
Jiazhu Li ◽  
Jin Wu ◽  
Guanlong Chen ◽  
...  
Keyword(s):  
Halogenation Reaction

Metal ion initiated halogenation reaction of N-haloamines

1970 ◽  
Vol 48 (4) ◽  
pp. 544-545 ◽  
Author(s):  
F. Minisci ◽  
G. P. Gardini ◽  
F. Bertini
Keyword(s):  
Free Radical ◽  
Radical Cation ◽  
Chlorine Atom ◽  
Metal Ion ◽  
Chain Mechanism ◽  
Radical Chain ◽  
Radical Chain Mechanism ◽  
Halogenation Reaction ◽  
Amino Radical Cation ◽  
Methyl Heptanoate

The metal ion catalyzed chlorination of 1-chlorobutane, 1-chlorohexane, methyl-pentanoate, and methyl-heptanoate by protonated N-chloroamines proceeds by a free radical chain mechanism and the chain carrying species was shown not to be a chlorine atom, but an amino radical cation.

Promotion of Appel-type reactions by N-heterocyclic carbenes

2019 ◽  
Vol 55 (55) ◽  
pp. 7962-7965 ◽  
Author(s):  
Mohanad A. Hussein ◽  
Thanh Vinh Nguyen
Keyword(s):  
Heterocyclic Carbenes ◽  
Halogenation Reaction

N-Heterocyclic carbenes are found to mediate the Appel-type dehydrative halogenation reaction.

Odoriferous Cyclic Ethersvia Co-Halogenation Reaction: Facile Preparation of Nerol Oxide,Florol®,Florol® Methyl Ether, andPityol® Methyl Ether

2007 ◽  
Vol 90 (1) ◽  
pp. 196-204 ◽  
Author(s):  
Pankaj Gupta ◽  
Vijay K. Sethi ◽  
Subhash C. Taneja ◽  
Bhahwal A. Shah ◽  
Samar S. Andotra ◽  
...  
Keyword(s):  
Methyl Ether ◽  
Halogenation Reaction ◽  
Facile Preparation

ÉTUDES SUR LA SYNTHÈSE DE L’HYDROXYPROLINE À PARTIR DE DÉRIVÉS DE L’ACIDE 2-AMINO-4-PENTÈNOÏQUE

1956 ◽  
Vol 34 (4) ◽  
pp. 502-514 ◽  
Author(s):  
Roger Gaudry ◽  
Louis Berlinguet ◽  
André Langis ◽  
Gérard Paris
Keyword(s):  
Double Bond ◽  
Acid Hydrolysis ◽  
Malonic Acid ◽  
Systematic Investigation ◽  
Carboxyl Group ◽  
Reaction Products ◽  
Pentanoic Acid ◽  
Copper Salts ◽  
Halogenation Reaction ◽  
Derivatives Of

A systematic investigation of the synthesis of 4-hydroxy-DL-proline and 2-amino-4-dihydroxyvaleric acid has been made, starting from the following derivatives of 2-amino-4-pentenoic acid: ethyl allylacetamidomalonate, ethyl allylacetamidocyanoacetate, 2-phthalimidopentenoic acid, allylacetamido-malonic acid, acetylallylglycine, 5-allylhydantoin, and 3-phenyl-5-allylhydantoin. Chlorine or bromine was added to the double bond of these compounds, and the reaction products were either derivatives of 5-halogenated-4-valerolactones or derivatives of 4,5-dihalogenated pentanoic acids, depending on whether the carboxyl group of the pentanoic acid was free or not when the halogenation reaction was carried out. Acid hydrolysis followed by treatment with barium hydroxide always gave mixtures, in different ratio, of 4-hydroxy-DL-proline and 2-amino-4,5-dihydroxyvaleric acid which were analyzed and isolated as the copper salts. In the case of 5-(2,3-dibromopropyl)hydantoin and 3-phenyl-5-(2,3-dibromopropyl)hydantoin, no cyclization could be obtained.

Functionalization of Quinolines through Copper-Catalyzed Regioselective Halogenation Reaction

2016 ◽  
Vol 1 (9) ◽  
pp. 1949-1953 ◽  
Author(s):  
Harekrishna Sahoo ◽  
Isai Ramakrishna ◽  
Mahiuddin Baidya
Keyword(s):  
Halogenation Reaction

Bismuth(III) Halide-Catalyzed Tandem Aldol-Halogenation Reaction: A Convenient Synthesis of .beta.-Halo Ketones and Esters

1994 ◽  
Vol 59 (8) ◽  
pp. 2238-2240 ◽  
Author(s):  
Christophe Le Roux ◽  
Hafida Gaspard-Iloughmane ◽  
Jacques Dubac
Keyword(s):  
Convenient Synthesis ◽  
Halogenation Reaction

ChemInform Abstract: HALOGENATION REACTION OF S-ARYL-S-((1,2-BENZISOXAZOL-3-YL)METHYL)SULFOXIMIDE

1982 ◽  
Vol 13 (42) ◽  
Author(s):  
T. YOSHIDA ◽  
S. NARUTO ◽  
H. UNO ◽  
H. NISHIMURA
Keyword(s):  
Halogenation Reaction
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