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Yoshikazu Horino Miki Sugata Tetsu Sugita Ataru Aimono Hitoshi Abe 《Tetrahedron letters》2017,58(22):2131-2134
A palladium-catalyzed reaction of easily accessible 3-(pinacolatoboryl)allyl acetates and aldehydes provides facile access to synthetically useful homoaldol equivalent products with high diastereoselectivity. The reaction presumably proceeds via allylation of aldehydes with α-acetoxy allylboronates that produced in situ by reductive elimination from allylic gem-palladium/boryl intermediates. 相似文献
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The performance of a narrow-linewidth nanosecond pulsed deep-UV coherent light source consisting of a frequency-tripled nanosecond pulsed Ti:sapphire laser injection seeded by a frequency-scanning cw Ti:sapphire laser has been characterized by using optogalvanic spectroscopy of silicon atoms as a diagnostic. The envelope of the optogalvanic spectrum indicates the pure Doppler broadening of silicon atoms, which was estimated to be as broad as 4 GHz, without the broadening effect from the laser linewidth itself. 相似文献
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A frequency-tripled deep-ultraviolet single-frequency nanosecond-pulsed Ti:Sapphire laser injection-locked with a cw single-frequency Ti:Sapphire laser was developed for the laser manipulation of silicon atoms with 252 nm resonant light. The cavity frequency of the slave-laser was controlled dynamically with a piezotransducer mounted on an output mirror to match the optical frequency of the seed laser, so as to minimize the build-up time of the slave-laser. Stable mode matching was achieved and resulted in high stability of the wavelength, making it sufficient for use in silicon atom optics. 相似文献
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