𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Synthesis of polyamides and polyureas containing leucine–tyrosine linkages

✍ Scribed by S. Jin; P. M. Mungara; K. E. Gonsalves

Book ID
102659051
Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
904 KB
Volume
35
Category
Article
ISSN
0887-624X

No coin nor oath required. For personal study only.

✦ Synopsis

Monomers with Ieucine-tyrosine linkages were synthesized using diphenyl phosphoryl azide asa coupling reagent. Leucyltyrosylpoly (propylene glycol) bis(2-aminopropy lether) tyrosylleucine (monomer 1) hasalonger spacer: poly(propylene glycol) bis(2-aminopropy lether (,Jeffamine@ D-400), and leucyltyrosyliminohexamethyleneiminotyrosylleucine (monomer 2) has a shorter spacer: hexamethylenediamine. Polyureas from monomers 1 and 2 with hexamethylene diisocyanate and methylenedi-p-phenyl diisocyanate were synthesized. Polyamide, polyesteramide from monomer 2 were synthesized. The characterization of these polymers using 'H-NMR, ':'C-NMR. solid-state "'C-NMR, IR, GPC, and also thermal analysis are presented.

📜 SIMILAR VOLUMES

Synthesis of aliphatic polyamides contai
Synthesis of aliphatic polyamides containing 4-phenylurazole linkages
✍ Mallakpour, Shadpour E; Sheikholeslami, Bahram 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 151 KB 👁 1 views

4-Phenylurazole (1) was reacted with excess acetyl chloride in N,N-dimethylacetamide (DMAc) solution at room temperature. The reaction occurred in quantitative yield with acetylation of both of the NwH bonds of the urazole group. This compound was characterized by IR, 1H NMR and elemental analysis,