Tetrahedron Letters p. 5063 - 5066 (1993)
Update date:2022-07-30
Topics:
Luening, Ulrich
Baumstark, Roland
Schyja, Wolfgang
A new type of concave pyridine 4 based on a 2,6-diarylpyridine system is described.By cyclization of a C5-unit 5 or 6 with ammonium acetate a tetra-ortho-methoxy-substituted 2,6-diarylpyridine 7 was obtained.Deprotection of the phenol functions and bimacrocyclization with the diiodide 9 gave 4a which catalyzes the addition of alcohols to diphenylketene.
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Doi:10.1016/S0040-4039(00)61679-9
(1993)Doi:10.1021/jo00079a039
(1993)Doi:10.1039/c5dt00023h
(2015)Doi:10.1021/ja00082a061
(1994)Doi:10.1055/s-1994-25394
(1994)Doi:10.1021/jm00313a028
(1967)
