ISSN:
0941-1216
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Conjugate addition of organocuprates to the 2-ethynyl-substituted cyclic iminium triflates 3 generates aminoallenes which tautomerize immediately to semicyclic 2-amino-1,3-dienes (6, 8) or exocyclic 1-amino-1,3-dienes (9, 10) with the enamine function incorporated into or attached to a 5-, 6-, or 7-membered ring. In those cases where tautomeric equilibria between the two aminodiene species are possible, the five-membered ring exists virtually exclusively with an exocyclic enamine double bond, but the six-membered ring prefers the exocyclic form. The seven-membered ring can accomodate both forms quite well.
Additional Material:
3 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/prac.19963380186
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