Tetrahedron Letters p. 4459 - 4462 (1997)
Update date:2022-08-16
Topics:
Brunet, Ernesto
Alonso, Maria T.
Juanes, Olga
Sedano, Rosa
Rodriguez-Ubis, Juan C.
The titled compound showed, upon spectrophotometric titrations with Group II cations, a spectacular bathochromic shift (c.a. 50 nm) with Mg2+ but not with the other cations. This result is - understood in terms of internal charge-transfer species expressly favored by Et2N and ArCO substituents and best matching of ionic diameter and charge density of Mg2+. This finding may lead to new simple photoactive probes.
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