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The synthesis of substituted benzo[a]quinolizidines via aza‐Michael addition of tetrahydroisoquinolines to alkyl vinyl ketones, followed by oxidative Mannich cyclization, is described. Various Michael adducts are easily prepared, and subsequent DDQ‐mediated oxidations stereoselectively afford the corresponding azacycles efficiently. Furthermore, the one‐pot aza‐Michael/oxidative Mannich process gave benzo[a]quinolizidines, thus providing a metal‐free and practical synthetic route to N‐heterocyclic building blocks. [ABSTRACT FROM AUTHOR]

Light to wear: Aluminum coated fibrous materials with excellent electrical conductivity and mechanical endurance are fabricated at room temperature by a chemical solution process. The resulting aluminum‐coated conductive papers and threads can be used in electric circuits for flexible and wearable electronics. [ABSTRACT FROM AUTHOR]

Wearable electronics require highly conductive fibrous materials, which can now be fabricated at room temperature. In their Communication on page 7718 ff., H. M. Lee, S. H. Ko, and co‐workers demonstrate that cotton or paper fibers can be impregnated and coated with Al atoms from the precursor Al{O(C4H9)2}. The fibrous materials exhibit excellent electrical conductivity, as well as enduring mechanical strength, which is indicative of their potential applications for flexible and wearable electronics. [ABSTRACT FROM AUTHOR]

Tragbare elektronische Bauteile erfordern sehr leitfähige faserförmige Materialien, die nun bei Raumtemperatur hergestellt werden können. In der Zuschrift auf S. 7872 ff. stellen H. M. Lee, S. H. Ko et al. das Imprägnieren und Beschichten von Baumwoll ‐ oder Papierfasern mit Al ‐ Atomen mithilfe der Vorstufe Al{O(C4H9)2} vor. Die Materialien weisen eine ausgezeichnete elektrische Leitfähigkeit und mechanische Haltbarkeit auf, was auf den möglichen Einsatz in elektrischen Schaltungen für flexible und tragbare elektronische Bauteile hinweist. [ABSTRACT FROM AUTHOR]

To fabricate the highly conductive Al film via a solution process, AlH3 etherates have been a unique Al source despite their chemical instability in solvents and thus lack of long-term sustainability. Herein, we suggest an innovative solution process to overcome the aforementioned drawbacks in AlH3 etherates; AlH3 aminates powder, which can be stored in low temperature surroundings and redissolved in solvents whenever it is needed. Since refrigeration of AlH3 aminates, AlH3{N(CH3)3}, was very effective to prevent its chemical degradation, Al film with excellence and uniformity in electrical and mechanical properties was successfully fabricated even by the 180-day stored AlH3{N(CH3)3} dissolved in solvents. Moreover, the applicability of long-term stored AlH3{N(CH3)3} to electronic devices was experimentally demonstrated by the successful operation of LED lamps connected to the Al pattern films on glass, PET, and paper substrates.

Light to wear: Aluminum coated fibrous materials with excellent electrical conductivity and mechanical endurance are fabricated at room temperature by a chemical solution process. The resulting aluminum-coated conductive papers and threads can be used in electric circuits for flexible and wearable electronics., (Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)