TY - JOUR
T1 - Synthesis of monomeric and oligomeric 1,1′-methylenebis-(1H- pyrazoles) contaning ethynyl fragments
AU - Potapov, A. S.
AU - Khlebnikov, A. I.
AU - Vasilevskii, S. F.
PY - 2006/9/1
Y1 - 2006/9/1
N2 - 1,1′-Methylenebis(1H-pyrazole) and 1,1′-methylenebis(3,5- dimethyl-1H-pyrazole) reacted with iodine in the presence of iodic acid to give the corresponding 4,4′-diiodo derivatives. Polycondensation of the latter with p-diethynylbenzene led to the formation of oligomeric compounds. 1,1′-Methylenebis(4-iodo-1H-pyrazoles) were converted into 4,4′-diethynyl derivatives by the Sonogashira and reverse Favorskii reactions, and their oxidative polycondensation in the presence of copper(I) chloride in pyridine also gave oligomeric products with a molecular weight exceeding 9000.
AB - 1,1′-Methylenebis(1H-pyrazole) and 1,1′-methylenebis(3,5- dimethyl-1H-pyrazole) reacted with iodine in the presence of iodic acid to give the corresponding 4,4′-diiodo derivatives. Polycondensation of the latter with p-diethynylbenzene led to the formation of oligomeric compounds. 1,1′-Methylenebis(4-iodo-1H-pyrazoles) were converted into 4,4′-diethynyl derivatives by the Sonogashira and reverse Favorskii reactions, and their oxidative polycondensation in the presence of copper(I) chloride in pyridine also gave oligomeric products with a molecular weight exceeding 9000.
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U2 - 10.1134/S107042800609020X
DO - 10.1134/S107042800609020X
M3 - Article
AN - SCOPUS:33749991785
VL - 42
SP - 1368
EP - 1373
JO - Russian Journal of Organic Chemistry
JF - Russian Journal of Organic Chemistry
SN - 1070-4280
IS - 9
ER -