Why is the reaction of ethyl (2-cyanoacetyl)carbamate with ethyl orthoformate highly stereoselective?

2005 ◽  
Vol 18 (12) ◽  
pp. 1183-1189 ◽  
Author(s):  
Kuangsen Sung ◽  
Ming-Chi Lin ◽  
Pin-Mei Huang ◽  
Bo-Ren Zhuang ◽  
Robert Sung ◽  
...  
Keyword(s):  
Ethyl Orthoformate

4-hydroxy-2-quinolones. 41. Reaction of hydrazides of 1-R-2-oxo-4-hydroxyquinoline-3-carboxylic acids with ethyl orthoformate

2000 ◽  
Vol 36 (2) ◽  
pp. 170-173 ◽  
Author(s):  
I. V. Ukrainets ◽  
N. A. Jaradat ◽  
I. V. Gorlacheva ◽  
O. V. Gorokhova ◽  
L. V. Sidorenko ◽  
...  
Keyword(s):  
Carboxylic Acids ◽  
Ethyl Orthoformate

Radical reactions of ethyl orthoformate with 1-hexene

1984 ◽  
Vol 33 (10) ◽  
pp. 2109-2112 ◽  
Author(s):  
I. I. Khatuntsev ◽  
E. V. Pastushenko ◽  
A. B. Terent'ev
Keyword(s):  
Radical Reactions ◽  
Ethyl Orthoformate

ChemInform Abstract: Synthesis of 1,1-Diethoxy-3-trimethylsilyloxy-3-butene and Study of Its Condensation with Acetals and Ethyl Orthoformate.

ChemInform ◽  
2010 ◽  
Vol 22 (33) ◽  
pp. no-no
Author(s):  
S. M. MAKIN ◽  
R. I. KRUGLIKOVA ◽  
O. V. KHARITONOVA ◽  
B. M. ARSHAVA
Keyword(s):  
Ethyl Orthoformate

Amidinoyl isothiocyanates in the synthesis of condensed quinazolines. Preparation of S-triazolo[4,3-c]quinazolines

1984 ◽  
Vol 49 (8) ◽  
pp. 1795-1799 ◽  
Author(s):  
Štefan Stankovský ◽  
Mária Sokyrová
Keyword(s):  
Nmr Spectra ◽  
H Nmr ◽  
Ethyl Orthoformate ◽  
Condensed Quinazolines

The s-triazolo[4,3-c]quinazolines were obtained from 4-hydrazinoquinazolines by condensation with ethyl orthoformate. 4-Hydrazinoquinazoline were prepared by hydrazinolysis of corresponding quinazoline-4-thiones which in turn were obtained by isomerization of amidinoyl isothiocyanates. The infrared and 1H NMR spectra of the final products are interpreted.

Preparation of 9-(β-D-ribofuranosyl)-2-hydroxypurine

1979 ◽  
Vol 44 (9) ◽  
pp. 2846-2853 ◽  
Author(s):  
Antonín Holý
Keyword(s):  
Nitrous Acid ◽  
Monosodium Salt ◽  
Ethyl Orthoformate ◽  
Mercuric Salt

Reaction of 5-aminocytosine (VI) with ethyl orthoformate afforded 2-hydroxypurine (I) which on acid-catalysed fusion with 1,2,3,5-tetra-O-acetyl-β-D-ribofuranose, followed by methanolysis, gave the 1-ribofuranosyl derivative of I (II). Reaction of the mercuric salt of I with 2,3,5-tri-O-benzoyl-D-ribofuranosyl chloride in toluene in the presence of mercuric bromide, or reaction of the monosodium salt of I with 2,3,5-tri-O-benzoyl-D-ribofuranosyl bromide in acetonitrile, afforded 9-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)-2-hydroxypurine (VII) which was methanolysed to 9-(β-D-ribofuranosyl)-2-hydroxypurine (III). The compound III was prepared also by deamination of 9-(β-D-ribofuranosyl)-2-aminopurine (X) with nitrous acid.

ChemInform Abstract: Reaction of N-(Benzyloxycarbonyl)aminobenzylphosphonous Acid with Ethyl Orthoformate.

ChemInform ◽  
2010 ◽  
Vol 31 (5) ◽  
pp. no-no
Author(s):  
Adrian Stano ◽  
Artur Mucha ◽  
Pawel Kafarski
Keyword(s):  
Ethyl Orthoformate
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