97877-72-0Relevant academic research and scientific papers
Bicyclic amine derivatives
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, (2008/06/13)
A compound of formula (I): STR1 wherein A represents a bidentate group of formula --CH2 --X--CH2 -- (wherein X is methylene, sulfur or oxygen), X'C=CY or X'WC--CYZ (wherein X', W, Y and Z are independently hydrogen, hydroxy, acyloxy, alkoxy, alkylsilyloxy, cyano or halogen, or X' and W or Y and Z together with the carbon to which they are attached form a carbonyl group), provided that A is not CH2 --CH2 ; Ar is an optionally substituted phenyl or 5-or 6-membered heterocyclic ring system containing from 1 to 3 heteroatoms individually selected from nitrogen, oxygen and sulfur atoms, and at least one unsaturation (double bond) between adjacent atoms in the ring, said heterocyclic ring being optionally fused to a benzene ring; aryl, heteroaryl, aralkyl, heteroarylalkyl, alkenyl, aralkenyl, alkynyl, alkoxycarbonyl, alkanesulfonyl, arenesulfonyl, alkanyloxycarbonyl, aralkyloxycarbonyl, aryloxycarbonyl, heterocyclylalkyl, carbamyl, dithiocarboxyl moieties of R, R3 and R4 comprise from 1 to 15 carbon atoms, and are optionally substituted with one or more substituents selected from, halogen, cyano, carboxyl, carboxylic acyl, carbamyl, alkoxycarbonyl, alkoxy, alkylenedioxy, hydroxy, nitro, haloalkyl, alkyl, amino, acylamino, imidate and phosphonato groups; or an acid addition salt, quaternary ammonium salt or N-oxide derived therefrom; an insecticidal, acaricidal or nematicidal composition comprising a compound of formula (I) and a suitable carrier or diluent therefor; a method of combating and controlling insect, acarine or nematode pests at a locus which comprises treating the pests or the locus of the pests with an effective amount of a compound of formula (I) or a composition as hereinbefore described.
Long-Lived Trialkylamine Radical Cations Containing Cα-H Bonds in Acyclic Alkyl Groups
Nelsen, Stephen F.,Cunkle, Glen T.
, p. 3701 - 3705 (2007/10/02)
Chemical reversibility is observed in the cyclic voltammogram of 9-neopentyl-9-azabicyclononane (3), allowing measurement of its Eo' value, 0.83 V vs.SCE in acetonitrile.Replacement of the tert-butyl group of 3 by isopropyl or phenyl leads to a much shorter radical cation lifetime, and Eo' could not be reliably measured for the 9-isobutyl or 9-benzyl compounds 6 or 7.The barrier for nitrogen inversion of 3, which must be accompanied by NCH2 rotation, is 12.0 kcal/mol at -10 deg C, 5 kcal/mol higher than the barrier for its 9-ethyl analogue 9.The dihedral angle between Cα-H and the nitrogen p orbital axis in the cation radical is argued to be important in determining cation radical lifetime.Observation of chemical reversibility in the CV of 9-(2-adamantyl)-9-azabicyclononane, 5,required in situ drying of the solvent with alumina, as well as fast scan rates or low temperatures.
