The question of Friedel-Crafts transformylations. Acid-catalyzed reactions of aromatic aldehydes with arenes

1987 ◽  
Vol 52 (8) ◽  
pp. 1591-1599 ◽  
Author(s):  
Royston M. Roberts ◽  
Ahmed M. El-Khawaga ◽  
Kevin M. Sweeney ◽  
Maher F. El-Zohry
Keyword(s):  
Aromatic Aldehydes ◽  
Acid Catalyzed ◽  
Catalyzed Reactions

Iron Lewis acid catalyzed reactions of phenyldiazomethane with aromatic aldehydes

Tetrahedron ◽  
1998 ◽  
Vol 54 (3-4) ◽  
pp. 349-358 ◽  
Author(s):  
Syed J. Mahmood ◽  
Anjan K. Saha ◽  
M.Mahmun Hossain
Keyword(s):  
Lewis Acid ◽  
Aromatic Aldehydes ◽  
Acid Catalyzed ◽  
Catalyzed Reactions

ChemInform Abstract: The Question of Friedel-Crafts Transformylations. Acid-Catalyzed Reactions of Aromatic Aldehydes with Arenes.

ChemInform ◽  
1987 ◽  
Vol 18 (39) ◽  
Author(s):  
R. M. ROBERTS ◽  
A. M. EL-KHAWAGA ◽  
K. M. SWEENEY ◽  
M. F. EL-ZOHRY
Keyword(s):  
Aromatic Aldehydes ◽  
Acid Catalyzed ◽  
Catalyzed Reactions

ChemInform Abstract: Iron Lewis Acid Catalyzed Reactions of Phenyldiazomethane with Aromatic Aldehydes.

ChemInform ◽  
2010 ◽  
Vol 29 (19) ◽  
pp. no-no
Author(s):  
S. J. MAHMOOD ◽  
A. K. SAHA ◽  
M. M. HOSSAIN
Keyword(s):  
Lewis Acid ◽  
Aromatic Aldehydes ◽  
Acid Catalyzed ◽  
Catalyzed Reactions

Acid-Catalyzed Reactions of Aromatic Aldehydes with Ethyl Diazoacetate:  An Investigation on the Synthesis of 3-Hydroxy-2-arylacrylic Acid Ethyl Esters

2004 ◽  
Vol 69 (22) ◽  
pp. 7599-7608 ◽  
Author(s):  
Matthew E. Dudley ◽  
Md. Monzur Morshed ◽  
Courtney L. Brennan ◽  
M. Shahidul Islam ◽  
M. Syarhabil Ahmad ◽  
...  
Keyword(s):  
Aromatic Aldehydes ◽  
Ethyl Esters ◽  
Ethyl Diazoacetate ◽  
Acid Catalyzed ◽  
Catalyzed Reactions

Synthesis of Some Steroidal Oxazolines

2001 ◽  
Vol 66 (12) ◽  
pp. 1831-1840 ◽  
Author(s):  
János Wölfling ◽  
Erzsébet Mernyák ◽  
Melinda Sebők ◽  
Gyula Schneider
Keyword(s):  
Aromatic Aldehydes ◽  
Acid Catalyzed ◽  
Catalyzed Reactions

Steroidal oxazolines 4a-4d and 5a-5f were synthesized. The acid-catalyzed reactions of 21-azido-20-hydroxy- and 21-hydroxy-20-azidosteroids with substituted aromatic aldehydes led to the formation of androst-5-en-3β-ols substituted in position 17β with oxazoline residues.

Acid-Catalyzed Reactions of Aromatic Aldehydes with Ethyl Diazoacetate: An Investigation on the Synthesis of 3-Hydroxy-2-arylacrylic Acid Ethyl Esters.

ChemInform ◽  
2005 ◽  
Vol 36 (11) ◽  
Author(s):  
Matthew E. Dudley ◽  
Md. Monzur Morshed ◽  
Courtney L. Brennan ◽  
M. Shahidul Islam ◽  
M. Syarhabil Ahmad ◽  
...  
Keyword(s):  
Aromatic Aldehydes ◽  
Ethyl Esters ◽  
Ethyl Diazoacetate ◽  
Acid Catalyzed ◽  
Catalyzed Reactions

Photoinduced rearrangement of hydroxymethylisoxazolines, a route to enaminoaldehydes

1986 ◽  
Vol 51 (10) ◽  
pp. 2167-2180 ◽  
Author(s):  
Lubor Fišera ◽  
Nadezhda D. Kozhina ◽  
Peter Oravec ◽  
Hans-Joachim Timpe ◽  
Ladislav Štibrányi ◽  
...  
Keyword(s):  
Thionyl Chloride ◽  
Quantum Yields ◽  
Acid Catalyzed ◽  
Catalyzed Reactions ◽  
Photoinduced Rearrangement ◽  
Condensed Heterocycles

3-Aryl-4-R-carbamoyl-5-hydroxymethylisoxazolines (IV) were synthesized by allowing R-NH2 amines with R = H, CH3, C3H7, C6H5C2H5, and NH2 to act on 3-(X-phenyl)-4-oxo-3a,4,6,6a-tetrahydrofuro[3,4-d]isoxazoles (III) with X = H, 4-CH3, 4-OCH3, 2-OCH3, 4-Cl, 2-Cl, 4-F, 2-F, 4-Br, 4-NO2, and 3-NO2. Exposed to radiation, the substances IV give Z-2-hydroxymethylamino-2-aryl-1-formylacrylamides (V) in good yields. The 4-Cl and 4-F substituted Z-derivatives V isomerize irreversibly to the E-derivatives VI if allowed to stand in solvent; the remaining derivatives V are stable. The quantum yields of the photoreaction are from 0.012 to 0.106 in dependence on the substituent X. In all cases where the compounds IV were used for the preparation of condensed heterocycles in conditions of acid-catalyzed reactions, lactones III were preferentially formed; the action of thionyl chloride on IV results in the formation of chloromethyl derivatives VIII, which do not undergo further cyclization.

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