scholarly journals Synthesis of meso-2,2’-bipyridyl-substituted calix[4]arenes and their response to metal cations

2020 ◽  
Vol 7 (4) ◽  
pp. 215-221
Author(s):  
T. D. Moseev ◽  
A. F. Khasanov ◽  
M. V. Varaksin ◽  
D. S. Kopchuk ◽  
I. S. Kovalev ◽  
...  
Keyword(s):  
Metal Cations ◽  
Alder Reaction ◽  
Diels Alder ◽  
Synthetic Approach ◽  
Fluorescence Response ◽  
Uv Fluorescence ◽  
Diels Alder Reaction ◽  
Convenient Synthetic Approach

A convenient synthetic approach to meso-substituted with 2,2’-bipyridine and 1-(pyridin-2-yl)isoquinoline residues calix[4]arenes is reported. This approach involves the reaction of generated in situ 2-lithio-calix[4]arene with 1,2,4-triazine precursor with the following aromatization of the obtained adduct, and the aza-Diels-Alder reaction of the 1,2,4-triazinyl-substituted calix[4]arene with 2,5-norbornadien or in-situ generated 1,2-dehydrobenzene. The UV/fluorescence response of thus obtained meso-pyridyl-substituted calix[4]arenes to metal cations is studied.

Organocatalytic enantioselective Diels–Alder reaction between hydroxymaleimides and in situ generated nitrosoalkenes for direct preparation of chiral hemiketals with 1,2-oxazine skeleton

2021 ◽  
Author(s):  
Min Xiang ◽  
Chen-Yi Li ◽  
Jian Zhang ◽  
Ying Zou ◽  
Wen-Sheng Li ◽  
...  
Keyword(s):  
Alder Reaction ◽  
Diels Alder ◽  
Diels Alder Reaction ◽  
Direct Preparation

Organocatalytic Enantioselective IEDDA reaction between hydroxymaleimides and in situ generated nitrosoalkenes has been disclosed, a series of chiral hemiketals containing 5,6-dihydro-4H-l,2-oxazines and succinimide frameworks have been prepared.

ChemInform Abstract: THE HIGH PRESSURE MEDIATED INTRAMOLECULAR DIELS-ALDER REACTION OF FURAN DIENES: A SYNTHETIC APPROACH TOWARDS DAPHNANES

1985 ◽  
Vol 16 (34) ◽  
Author(s):  
S. J. BURRELL ◽  
A. E. DEROME ◽  
M. S. EDENBOROUGH ◽  
L. M. HARWOOD ◽  
S. A. LEEMING ◽  
...  
Keyword(s):  
High Pressure ◽  
Alder Reaction ◽  
Diels Alder ◽  
Synthetic Approach ◽  
Diels Alder Reaction

Synthetic approach towards tetrodotoxin. I. Diels-Alder reaction of α-oximinoethylbenzoquinones with butadiene

1970 ◽  
Vol 11 (59) ◽  
pp. 5127-5128 ◽  
Author(s):  
Y. Kishi ◽  
F. Nakatsubo ◽  
M. Aratani ◽  
T. Goto ◽  
S. Inoue ◽  
...  
Keyword(s):  
Alder Reaction ◽  
Diels Alder ◽  
Synthetic Approach ◽  
Diels Alder Reaction
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