Practical Synthesis of Urea Derivatives from Primary Amines, Carbon Monoxide, Sulfur, and Oxygen under Mild Conditions.

ChemInform ◽  
2007 ◽  
Vol 38 (1) ◽  
Author(s):  
Takumi Mizuno ◽  
Masatoshi Mihara ◽  
Toshiyuki Iwai ◽  
Takatoshi Ito ◽  
Yoshio Ishino
Keyword(s):  
Carbon Monoxide ◽  
Primary Amines ◽  
Urea Derivatives ◽  
Mild Conditions ◽  
Practical Synthesis

Practical Synthesis of Urea Derivatives from Primary Amines, Carbon Monoxide, Sulfur, and Oxygen under Mild Conditions

Synthesis ◽  
2006 ◽  
Vol 2006 (17) ◽  
pp. 2825-2830 ◽  
Author(s):  
Takumi Mizuno ◽  
Masatoshi Mihara ◽  
Toshiyuki Iwai ◽  
Takatoshi Ito ◽  
Yoshio Ishino
Keyword(s):  
Carbon Monoxide ◽  
Primary Amines ◽  
Urea Derivatives ◽  
Mild Conditions ◽  
Practical Synthesis

Solvent-Free Synthesis of Urea Derivatives from Primary Amines and Sulfur under Carbon Monoxide and Oxygen at Atmospheric Pressure

Synthesis ◽  
2007 ◽  
Vol 2007 (20) ◽  
pp. 3135-3140 ◽  
Author(s):  
Takumi Mizuno ◽  
Masatoshi Mihara ◽  
Takeo Nakai ◽  
Toshiyuki Iwai ◽  
Takatoshi Ito
Keyword(s):  
Carbon Monoxide ◽  
Atmospheric Pressure ◽  
Solvent Free ◽  
Primary Amines ◽  
Urea Derivatives ◽  
Solvent Free Synthesis

scholarly journals Practical Synthesis of 2-Iodosobenzoic Acid (IBA) without Contamination by Hazardous 2-Iodoxybenzoic Acid (IBX) under Mild Conditions

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 1897
Author(s):  
Hideyasu China ◽  
Nami Kageyama ◽  
Hotaka Yatabe ◽  
Naoko Takenaga ◽  
Toshifumi Dohi
Keyword(s):  
Aqueous Solution ◽  
Room Temperature ◽  
Practical Method ◽  
Hypervalent Iodine ◽  
Mild Conditions ◽  
Sequential Procedures ◽  
Iodine Compounds ◽  
Practical Synthesis ◽  
Iodosobenzoic Acid ◽  
Lower Temperature

We report a convenient and practical method for the preparation of nonexplosive cyclic hypervalent iodine(III) oxidants as efficient organocatalysts and reagents for various reactions using Oxone® in aqueous solution under mild conditions at room temperature. The thus obtained 2-iodosobenzoic acids (IBAs) could be used as precursors of other cyclic organoiodine(III) derivatives by the solvolytic derivatization of the hydroxy group under mild conditions of 80 °C or lower temperature. These sequential procedures are highly reliable to selectively afford cyclic hypervalent iodine compounds in excellent yields without contamination by hazardous pentavalent iodine(III) compound.

ChemInform Abstract: Synthesis of Carbamoyl Azides from Primary Amines and Carbon Dioxide under Mild Conditions.

ChemInform ◽  
2008 ◽  
Vol 39 (31) ◽  
Author(s):  
Eduardo Garcia-Egido ◽  
Miryam Fernandez-Suarez ◽  
Luis Munoz
Keyword(s):  
Carbon Dioxide ◽  
Primary Amines ◽  
Mild Conditions

Titration syntheses of polyaminosubstituted phthalocyanines via nucleophilic aromatic substitutions on zinc(II) 1,2,3,4,8,9,10,11,15,16,17,18,22,23,24,25-hexadecafluorophthalocyanine

2007 ◽  
Vol 11 (07) ◽  
pp. 537-546 ◽  
Author(s):  
Clifford C. Leznoff ◽  
Annette Hiebert ◽  
Sibel Ok
Keyword(s):  
Amino Acids ◽  
Chain Length ◽  
Secondary Amines ◽  
Primary Amines ◽  
Tertiary Butyl ◽  
Butyl Esters ◽  
Mild Conditions ◽  
Nucleophilic Aromatic Substitutions

Primary amines, secondary amines and tertiary butyl esters of amino acids are used as nucleophiles with zinc(II) hexadecafluorophthalocyanine to provide mixtures of mono and disubstituted fluorinated phthalocyanines under mild conditions, or polyaminosubstituted phthalocyanines when using the amines as solvents. Diamines give cyclic substituted phthalocyanines, binuclear or trinuclear phthalocyanines or mixtures of both types, depending on the chain length or structure of the diamine.

Guanylation/cyclisation of amino acid esters using an imidazolin-2-iminato titanium initiator

2019 ◽  
Vol 48 (21) ◽  
pp. 7227-7235 ◽  
Author(s):  
Suman Das ◽  
Jayeeta Bhattacharjee ◽  
Tarun K. Panda
Keyword(s):  
Amino Acid ◽  
Amino Acid Esters ◽  
Urea Derivatives ◽  
Mild Conditions ◽  
Acid Esters

Catalytic hydroamination of amino acid esters with carbodiimides and isocyanates to furnish corresponding quinazolinone and urea derivatives using two TiIV complexes under mild conditions is reported.

Palladium-catalyzed synthesis of symmetrical urea derivatives by oxidative carbonylation of primary amines in carbon dioxide medium

2011 ◽  
Vol 282 (1) ◽  
pp. 120-127 ◽  
Author(s):  
Nicola Della Ca’ ◽  
Paolo Bottarelli ◽  
Angela Dibenedetto ◽  
Michele Aresta ◽  
Bartolo Gabriele ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Primary Amines ◽  
Oxidative Carbonylation ◽  
Urea Derivatives ◽  
Palladium Catalyzed

Synthesis of poly(amide-imide)s by palladium-catalysed polycondensation of aromatic dibromides containing imide structure, aromatic diamines and carbon monoxide

1994 ◽  
Vol 6 (4) ◽  
pp. 395-403 ◽  
Author(s):  
Mitsuru Ueda ◽  
Takayoshi Yokoo
Keyword(s):  
Carbon Monoxide ◽  
Aprotic Solvents ◽  
Aromatic Diamines ◽  
Structural Units ◽  
Excellent Thermal Stability ◽  
Mild Conditions ◽  
Weight Losses ◽  
Strong Acids ◽  
Dipolar Aprotic Solvents ◽  
General Method

A general method for the preparation of aromatic poly(amide-imide)s, which involves the palladium-catalysed polycondensation of aromatic dibromides containing imide structural units, aromatic diamines and carbon monoxide, has been developed. Polymerizations were carried out in N,N-dimethylacetamide (DMAc) in the presence of palladium catalyst, triphenylphosphine and 1,8-diazabicycIo[5,4,0]-7-undecene (DBU), and gave a series of poly(amide-imide)s with inherent viscosities up to 0.66 dl g-1 under mild conditions. The polymers were quite soluble in strong acids, dipolar aprotic solvents and pyridine. Thermogravimetry of the polymers showed excellent thermal stability, indicating that 10% weight losses of the polymers were observed in the range above 460C in air. The glass transition temperatures of the polymers ranged from 240 to 262C. These polymers also showed good tensile strengths and moduli.

Sign in / Sign up

Export Citation Format

Share Document