34878-46-1Relevant academic research and scientific papers
A General, Practical Triethylborane-Catalyzed Reduction of Carbonyl Functions to Alcohols
Peng, Dongjie,Zhang, Mintao,Huang, Zheng
supporting information, p. 14737 - 14741 (2015/10/19)
A combination of the abundant and low-cost triethylborane and sodium alkoxide generates a highly efficient catalyst for reduction of esters, as well as ketones and aldehydes, to alcohols using an inexpensive hydrosilane under mild conditions. The catalyst system exhibits excellent chemoselectivity and a high level of functional group tolerance. Mechanistic studies revealed a resting state of sodium triethylalkoxylborate that is the product of the reaction of BEt3 with sodium alkoxide. This borate species reacts with hydrosilane to form NaBEt3H, which rapidly reduces esters.
Synthesis and properties of coil-shaped 2,3-thienylene-ethynylene oligomers
Aso, Yoshio,Obara, Yuko,Okai, Takashi,Nishiguchi, Shoji,Otsubo, Tetsuo
, p. 153 - 158 (2007/10/03)
A series of 2,3-thienylene-ethynylene oligomers have been synthesized by repeated application of the Pd-catalyzed coupling reaction of terminal alkynes and thienyl iodides as the key building steps. The analytical GPC molecular weights, much deflated relative to the actual molecular weights, strongly suggest a coil shape for the conformation of the oligomers in solution. Their electronic absorption and emission spectral features are discussed.
Aromatic polycyclic retinoid-type derivatives, method for preparing same, and use thereof for making pharmaceutical and cosmetic compositions
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, (2008/06/13)
Novel aromatic polycyclic retinoid-type derivatives of general formula (I), wherein groupings R3and R4attached to the double bond between carbons 11 and 12 are cis groupings, and pharmaceutical and cosmetic compositions containing same, are disclosed.
Bromothiophene Reactions. II. A Novel Rearrangement in the Zinc and Acetic Acid Reduction
Alvares-Insua, A. S.,Conde, S.,Corral, C.
, p. 713 - 716 (2007/10/02)
The elimination of the α-bromine atoms of the bromothienylethanolamine derivatives 2a, b, c, d with zinc and acetic acid unexpectedly involved a migration of the ethanolamine side chain from the 3 to the 2 position in the thiophene ring.Experiments carried out with simpler analogous compounds 3, 4 and 6 seem to indicate that this rearrangement takes place only in those cases in which the carbon atom of the side chain next to the ring supports an oxygen atom capable of being protonated in the reaction medium.A tentative mechanism is proposed to explain the experimental results.
