scholarly journals Silver(I)-Catalyzed Intramolecular Cyclizations of Epoxide-Propargylic Esters to 1,4-Oxazine Derivatives

ChemistryOpen ◽  
2016 ◽  
Vol 6 (1) ◽  
pp. 21-24 ◽  
Author(s):  
Peng-Hua Li ◽  
Jin-Ming Yang ◽  
Yin Wei ◽  
Min Shi
Keyword(s):  
Intramolecular Cyclizations ◽  
Propargylic Esters ◽  
Oxazine Derivatives

scholarly journals Gold-Catalyzed Intramolecular Cyclizations of Cyclopropenes with Propargylic Esters

ChemistryOpen ◽  
2015 ◽  
Vol 5 (1) ◽  
pp. 33-37 ◽  
Author(s):  
Peng-Long Zhu ◽  
Xiang-Ying Tang ◽  
Min Shi
Keyword(s):  
Intramolecular Cyclizations ◽  
Propargylic Esters

A Review on Current Synthetic Strategies of Oxazines

2018 ◽  
Vol 16 (1) ◽  
pp. 43-58 ◽  
Author(s):  
Santosh L. Gaonkar ◽  
Vignesh U. Nagaraj ◽  
Swarnagowri Nayak
Keyword(s):  
Biological Properties ◽  
The Past ◽  
Bifunctional Compounds ◽  
Synthetic Approaches ◽  
Oxazine Derivatives

In the past three decades, the heterocyclic oxazine cores have been intensely concerned. Oxazine derivatives are promising vital heterocyclic motifs. They are eminent for their synthetic potential and extensive biological properties. Oxazines are versatile intermediates for the synthesis of a variety of heterocycles and bifunctional compounds. Researchers have reported several synthetic approaches for the preparation of oxazines. This review emphasises the recent approaches for the synthesis of oxazine derivatives.

Intramolecular cyclizations leading to bridgehead bicyclics2. 5,5-dialkylhydantoin derivatives

1977 ◽  
Vol 14 (3) ◽  
pp. 511-513 ◽  
Author(s):  
Katsuhide Okada ◽  
James A. Kelley ◽  
John. S. Driscoll
Keyword(s):  
Intramolecular Cyclizations

Solvent and substituent effects on rearrangement of 4-(4-X-phenyl)-2,7-dioxa-3-azabicyclo[3,3,0]oct-3-enes

1985 ◽  
Vol 50 (9) ◽  
pp. 1971-1981 ◽  
Author(s):  
Lubor Fišera ◽  
Marta Konopíková ◽  
Ladislav Štibrányi ◽  
Hans-Joachim Timpe
Keyword(s):  
Substituent Effects ◽  
Quantum Yields ◽  
Polar Solvents ◽  
Aromatic Residue ◽  
Product Ratio ◽  
Oxazoline Derivatives ◽  
Oxazine Derivatives

Preparation of the title compounds V is described. They give, on irradiation, the 2,3-dihydro-6H-1,3-oxazine derivatives VI as the main products besides the tetrahydrofuro[3,4-d]oxazoline derivatives VII. The VI to VII product ratio depends on the substituent bound to the aromatic residue. Polar solvents favour formation of the VI derivatives in the order Cl >H > CH3. In non-polar solvents the proportion of VII is increased. The quantum yields of the photoreaction vary within the limits from 0.006 to 0.04 (H >F > Cl > CH3 > OCH3).

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