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.

A Straightforward Modular Approach to NLO-Active β-Amino Vinyl Nitrothiophenes-[with significant first hyperpolarizabilities and interesting morphological stability].-(MUELLER, THOMAS J. J.; ROBERT, JAN P.; SCHMAEZLIN, ELMAR; BRAEUCHLE, CHRISTOPH;