ISSN:
0021-8383
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
1-(6-Phenyl) and 1-(6-(4-tolyl)-3-oxidopyridinium betaines (1a, b) react as 1,3-dipoles with conjugated olefines, namely 4-vinylpyridine, ethyl cinnamate and styrene as 2π-1,3-dipolarophiles to give 2,6-cycloadducts [6-substituted-8-azabicyclo[3,2,1]oct-3-en-2-ones (3a, b, 4a, b and 5b)] and with butadiene and furan as 4π-dipolarophiles to give 2,4-cycloadducts [7-substituted-7-azabicyclo[4,3,1]deca-3,8-diene-10-one] and 3-6-phenylpyridazin-3-yl)-3-aza-10-oxatricyclo-[5,2,1,12,6]undeca-4,8-diene-11-one (9a). Structural and configurational assignments were based on H.n.m.r. spectral analysis.
Additional Material:
1 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/prac.19893310116
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