Norie Tsuboya

Nonlinear optical properties of novel fullerene-ferrocene hybrid molecules

A series of novel fullerene–ferrocene derivatives has been synthesized and their NLO properties investigated. Ferrocene acts as a donor and fullerene as a good acceptor, leading to large hyperpolarizabilities, especially in the case of the compound with the longest π-conjugation system, which exhibits the highest β value.

Nonlinear optical properties of novel carborane???ferrocene conjugated dyads. Electron-withdrawing characteristics of carboranesElectronic supplementary information (ESI) available: a complete Experimental section containing HRS measurements, full NMR, IR, UV, mass spectrometry, and elemental analyses/HRMS data, as well as original NMR spectra and X-ray structural analysis of 1b. See http://www.rsc.org/suppdata/jm/b2/b202236b/

The novel carborane–ferrocene conjugated dyads 1–3 and 6–8 were synthesized and their NLO properties were investigated. ortho-, meta-, and para-carboranes act as electron-withdrawing groups, and the para-carborane dyads 3 and 8 exhibited higher β values (hyperpolarizability) than the ortho- and meta-carborane analogues 1, 2, 6, 7.

PALLADIUM-CATALYZED BENZANNULATION OF CONJUGATED ENYNES. ENHANCED REACTIVITY OF ALKOXYCARBONYL- AND CYANOENYNES

Abstract We report the high reactivity of alkoxycarbonyl- and cyanoenynes in the homo-benzannulation of conjugated enynes. The introduction of these electron-withdrawing groups enabled us to carry out the benzannulation of 1-substituted enynes as well as 1,2- and 2,4-disubstituted enynes, which have much lower reactivity compared to 2- or 4-monosubstituted enynes. Polysubstituted benzenes were prepared in a highly regioselective manner in good to excellent yields.