scholarly journals Syntheses of pyrimido[4,5-c]pyridazine derivatives. II. A novel reaction of .ALPHA.-diazo-.BETA.-oxo-5-(4-chloropyrimidine)propionate with triphenyl phosphine leading to 1,4-dihydro-4-oxopyrimido[4,5-c]pyridazine-3-carboxylate.

1978 ◽  
Vol 26 (1) ◽  
pp. 14-18 ◽  
Author(s):  
TERUYUKI MIYAMOTO ◽  
YOSHITAKA KIMURA ◽  
JUNICHI MATSUMOTO ◽  
SHINSAKU MINAMI
Keyword(s):  
Triphenyl Phosphine ◽  
Pyridazine Derivatives

New Pyrrolo[1,2-b]pyridazine Derivatives by 1,3-Dipolar Cycloaddition of Mesoionic Oxazolopyridazinone

2008 ◽  
Vol 59 (11) ◽  
Author(s):  
Miron Teodor Caproiu ◽  
Florea Dumitrascu ◽  
Mino R. Caira
Keyword(s):  
Nmr Spectroscopy ◽  
Elemental Analysis ◽  
Cycloaddition Reaction ◽  
Dipolar Cycloaddition ◽  
Pyridazine Derivatives ◽  
New Compounds

New pyrrolo[1,2-b]pyridazine derivatives 8a-f were synthesized by 1,3-dipolar cycloaddition reaction between mesoionic 1,3-oxazolo[3,2-b]pyridazinium-2-oxides and diethyl or diisopropyl acetylenedicarboxylate as alkyne dipolarophiles. The structures of the new compounds were assigned by elemental analysis and NMR spectroscopy.

Organothallium compounds. VII. β-Diketonatobis(pentafluorophenyl)-thallium(III) compounds and their coordination derivatives

1971 ◽  
Vol 24 (12) ◽  
pp. 2519 ◽  
Author(s):  
GB Deacon ◽  
VN Garg
Keyword(s):  
Molecular Weight ◽  
Phosphine Oxide ◽  
Spectroscopic Data ◽  
Triphenyl Phosphine ◽  
Organothallium Compounds ◽  
Triphenyl Phosphine Oxide

The complexes (C6F5)2TlX [X = MeCOCHCOMe (acac), CF3COCHCOMe (tfac), CF8COCHCOCF3 (hfac), PhCOCHCOMe (bzac), PhCOCHCOPh (dbm), or quinolin-8- olate (oxinate or ox)], have been prepared by reactions between bromobis(pentafluorophenyl)thallium(III) and the appropriate sodium or thallous β-diketonates or sodium quinolin-8-olate, and react with equimolar amounts of 1,10-phenanthroline (phen) or 2,2?-bipyridyl (bipy) to give the complexes (C6F5)2- (phen or bipy)TlX (X = acac, tfac, or hfac), (C6F5)2(phen)TlX (X = bzac, dbm, or ox), but not (C6F5)2(bipy)TlX (X = bzac, dbm, or ox). On reaction with triphenyl- phosphine oxide or triphenylarsine oxide, the complexes (C6F5)2(Ph3PO or Ph3AsO)-TlX (X = acac, tfac, hfac, or dbm) and (C6F5)2Ph3AsOTl(ox) have been obtained. From conductance and molecular weight measurements and spectroscopic data, the complexes (C6F5)2TlX (except X = ox), (C6F5)2(Ph3PO or Ph3AsO)TlX, and (C6F5)2(phen or bipy)TlX, are considered to be monomeric with chelated β-diketonate or oxinate groups, and hence to contain four-, five-, and six-coordinate thallium respectively, whereas (C6F5)2Tl(ox) is considered to have an associated structure with bridging oxinate groups.

Synthesis and Herbicidal Activities of Novel 3-N-Substituted Amino-6-methyl-4-(3-trifluoromethylphenyl)pyridazine Derivatives

2008 ◽  
Vol 56 (15) ◽  
pp. 6567-6572 ◽  
Author(s):  
Han Xu ◽  
Xu-Hong Hu ◽  
Xiao-Mao Zou ◽  
Bin Liu ◽  
You-Quan Zhu ◽  
...  
Keyword(s):  
Pyridazine Derivatives
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