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A straightforward modular approach to NLO-active beta-amino vinyl nitrothiophenes
1Department Chemie, Ludwig-Maximilians-Universitat Munchen, Butenandtstrasse 5-13 (Haus F), D-81377 Munchen, Germany.
Organic Letters
|August 24, 2000
Abstract:
Secondary amines add very efficiently to 2-ethynyl-5-nitrothiophene to give beta-amino vinyl nitrothiophenes, a novel class of push-pull chromophores. According to first HRS measurements these highly solvochromic compounds with relatively short dipole axes display remarkably high static first hyperpolarizabilities = 29-31 x 10(-)(30) esu.