Two Tricyclic Adducts from Consecutive Additions of Dimethyl Acetylene-dicarboxylate to 2,4-Di-t-butyl-3a,5a-dihydro-3H-cyclobuta[b]pyrrole: A Novel Formation of Cyclobuta[1’,2’-f]pyrrolo[1,2-b]oxazine Derivative

Heterocycles ◽  
2001 ◽  
Vol 55 (4) ◽  
pp. 775
Author(s):  
Masaru Kimura ◽  
Shizuka Takami ◽  
Kyosuke Satake
Keyword(s):  
Oxazine Derivative ◽  
Dimethyl Acetylene Dicarboxylate

Modification of styrene polymer by attaching suitable groups as side chain

e-Polymers ◽  
2009 ◽  
Vol 9 (1) ◽  
Author(s):  
Mehrdad Mahkam ◽  
Bakhshali Massoumi ◽  
Hossien Mirfatahi
Keyword(s):  
Thermogravimetric Analysis ◽  
Cycloaddition Reaction ◽  
Side Chain ◽  
H Nmr ◽  
Azide Ion ◽  
Ft Ir ◽  
Commercial Polymers ◽  
Polymerization Method ◽  
Thermal Stability Of ◽  
Dimethyl Acetylene Dicarboxylate

AbstractChemical modification of inexpensive commercial polymers, such as styrene, is a safe methodology to obtain new copolymers. The 4-chloromethyl styrene (CMS) was copolymerized with styrene (in various mole ratios) by free radical polymerization method at 70 ºC using α,α-azobis(isobutyronitrile) (AIBN) as an initiator. The azide ion was covalently attached to the obtained copolymers with replacement of all the chlorine atoms in CMS units. The 1,3-dipolar click cycloaddition reaction between azido polymers and dimethyl acetylene dicarboxylate (DMAD) yielded polymers with 1,2,3-triazoles in side chain. The polymers, obtained in quantitative yields, were characterized by FT-IR and 1H NMR spectroscopy; thermogravimetric analysis (TGA) and GPC studies. The thermogravimetric analysis (TGA) indicated that the thermal stability of copolymers increases with incorporation of 1,2,3-triazole groups in side chains of copolymers.

A novel high performance oxazine derivative: design of tetrafunctional monomer, step-wise ring-opening polymerization, improved thermal property and broadened processing window

RSC Advances ◽  
2015 ◽  
Vol 5 (42) ◽  
pp. 33623-33631 ◽  
Author(s):  
Tong Zhang ◽  
Jun Wang ◽  
Tiantian Feng ◽  
Hui Wang ◽  
Noureddine Ramdani ◽  
...  
Keyword(s):  
Thermal Property ◽  
Ring Opening ◽  
High Performance ◽  
Condensation Reaction ◽  
Ring Opening Polymerization ◽  
Processing Window ◽  
Mannich Condensation ◽  
Oxazine Derivative ◽  
First Time ◽  
Tetrafunctional Monomer

A novel tetrafunctional oxazine monomer containing benzoxazine and fluorene-oxazine was prepared for the first time using a Mannich condensation reaction of 2,7-dihydroxy-9,9-bis-(4-hydroxyphenyl)fluorene with paraformaldehyde and n-butylamine.

Cleavage of Some Annulated Tetrahydropyridines under the Action of Dimethyl Acetylene Dicarboxylate in Protic Solvents. New Practical Route to Substituted Pyrroles and Indoles.

ChemInform ◽  
2004 ◽  
Vol 35 (27) ◽  
Author(s):  
Tatiana N. Borisova ◽  
Leonid G. Voskressensky ◽  
Tatiana A. Soklakova ◽  
Larisa N. Kulikova ◽  
Alexey V. Varlamov
Keyword(s):  
Protic Solvents ◽  
Substituted Pyrroles ◽  
Dimethyl Acetylene Dicarboxylate

Synthesis of New Fused Thieno[3,2-d]pyrimidines Based on Thieno[3,2-d][1,3]oxazine Derivative

2019 ◽  
Vol 89 (4) ◽  
pp. 847-851 ◽  
Author(s):  
V. V. Dabaeva ◽  
M. R. Bagdasaryan ◽  
E. G. Paronikyan ◽  
Sh. Sh. Dashyan
Keyword(s):  
Oxazine Derivative

In vivo detection of amyloid-β deposits by near-infrared imaging using an oxazine-derivative probe

2005 ◽  
Vol 23 (5) ◽  
pp. 577-583 ◽  
Author(s):  
Martin Hintersteiner ◽  
Albert Enz ◽  
Peter Frey ◽  
Anne-Lise Jaton ◽  
Willy Kinzy ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Imaging ◽  
Amyloid Β ◽  
Near Infrared Imaging ◽  
In Vivo Detection ◽  
Oxazine Derivative
Sign in / Sign up

Export Citation Format

Share Document