Ando ester condensation

2020 ◽  
Author(s):  
O. Crosby
Keyword(s):  
Ester Condensation

Preparation of conjugates of uridine with proteins by the imido ester condensation method

1981 ◽  
Vol 46 (4) ◽  
pp. 933-940 ◽  
Author(s):  
Helmut Pischel ◽  
Antonín Holý ◽  
Günther Wagner
Keyword(s):  
Human Serum ◽  
Acid Hydrolysis ◽  
Ester Hydrochloride ◽  
Protein Conjugates ◽  
Condensation Method ◽  
Ester Condensation ◽  
Acid Catalyzed

Reaction of 5'-O-p-toluenesulfonyl-2',3'-O-isopropylideneuridine (I) with sodium 4-cyanophenoxide afforded 2',3'-O-isopropylidene-5'-O-(4-cyanophenyl)uridine (II) which was converted by acid hydrolysis into 5'-O-(4-cyanophenyl)uridine (IIIa). Acid-catalyzed addition of ethanol to compound IIIa gave the imido ester hydrochloride IIIb which on reaction with ammonia or ethylamine was transformed into the amidine derivatives IIIc and IIId. Compound IIIb reacted with human serum albumine or bovine gamma-globuline at pH 9.2 to give protein conjugates with uridine, bound covalently by an amidine bond (IIIe,f).

Phase transfer catalysis. Acetoacetic ester condensation

1974 ◽  
Vol 39 (22) ◽  
pp. 3271-3273 ◽  
Author(s):  
H. Dupont Durst ◽  
Lanny Liebeskind
Keyword(s):  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
Acetoacetic Ester ◽  
Ester Condensation

Darzens glycidic ester condensation of benzaldehyde in solid-liquid two-phase system

1983 ◽  
Vol 22 (1) ◽  
pp. 118-120 ◽  
Author(s):  
Chikai Kimura ◽  
Kageaki Kashiwaya ◽  
Koichi Murai ◽  
Hiroyuki Katada
Keyword(s):  
Phase System ◽  
Two Phase ◽  
Ester Condensation ◽  
Solid Liquid

A synthesis of methyl lambertianate

1976 ◽  
Vol 54 (1) ◽  
pp. 141-145 ◽  
Author(s):  
Russell A. Bell ◽  
Marcel Fétizon
Keyword(s):  
Degradation Product ◽  
Methyl Ketone ◽  
Furan Ring ◽  
Partial Synthesis ◽  
Ester Condensation ◽  
Moderate Yield

A partial synthesis of methyl lambertianate from the 13-keto-degradation product 1 from methyl agathate is described. The furan ring is synthesized by the method of Burness, and involves hydroxymethyleneation of methyl ketone 1, acetal formation, glycidic ester condensation, and final pyrolysis of the glycidic ester-acetal 5 to give methyl 16-carboxylambertianate. Methyl lambertianate was obtained in moderate yield by copper-quinoline decarboxylation.

ChemInform Abstract: Synthesis of Optically Active 2-Chloromethyl-2-oxazolines by the Ortho-Ester Condensation Method Using Triethyl Orthochloroacetate.

ChemInform ◽  
2010 ◽  
Vol 30 (25) ◽  
pp. no-no
Author(s):  
Kazuyuki Kamata ◽  
Hideki Sato ◽  
Emi Takagi ◽  
Isao Agata ◽  
A. I. Meyers
Keyword(s):  
Optically Active ◽  
Ortho Ester ◽  
Condensation Method ◽  
Ester Condensation
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