Low-valent magnesium(<scp>i</scp>)-catalyzed cyanosilylation of ketones
作者:Weifan Wang、Man Luo、Jia Li、Sumod A. Pullarkat、Mengtao Ma
DOI:10.1039/c8cc00826d
日期:——
The magnesium(I) complex [(XylNacnac)Mg]2 was employed as a highly efficient catalyst for the cyanosilylation of a variety of ketones with trimethylsilyl cyanide under mild conditions. In contrast to the traditional stoichiometric use of magnesium(I) complexes, 1 provides the first example of a truly catalytic application of Mg(I) complexes.
Potent, Orally Active Heterocycle-Based Combretastatin A-4 Analogues: Synthesis, Structure−Activity Relationship, Pharmacokinetics, and In Vivo Antitumor Activity Evaluation
作者:Le Wang、Keith W. Woods、Qun Li、Kenneth J. Barr、Richard W. McCroskey、Steven M. Hannick、Laura Gherke、R. Bruce Credo、Yu-Hua Hui、Kennan Marsh、Robert Warner、Jang Y. Lee、Nicolette Zielinski-Mozng、David Frost、Saul H. Rosenberg、Hing L. Sham
DOI:10.1021/jm010523x
日期:2002.4.1
The synthesis and structure-activity relationship study of a series of compounds with heterocycles in place of the cis double bond in combretastatinA-4 (CA-4) are described. Substituted tosylmethyl isocyanides were found to be the key intermediates in construction of the heterocycles. Cytotoxicities of the heterocycle-based CA-4 analogues were evaluated against NCI-H460 and HCT-15 cancer cell lines
Efficient, Rapid and Solvent-free Cyanosilylation of Aldehydes and Ketones Catalyzed by SbCl<sub>3</sub>
作者:S.A. Pourmousavi、H. Salahshornia
DOI:10.5012/bkcs.2011.32.5.1575
日期:2011.5.20
cyanohydrins. Among them, the cyanosilylation of carbonylcompounds using trimethylsilyl cyanide (TMSCN) is widely utilized for the synthesis of cyanohydrins. Several reagents including Lewis acids, Lewis bases, metal alkoxides, bifunctional catalysts, iodine and inorganic salts have been found to effectively transfer the cyano group from TMSCN to carbonylcompounds. Various types of Lewis acids such as AlCl3
Cyanosilylation of Aldehydes and Ketones Catalyzed by Nanocrystalline Magnesium Oxide
作者:M. Lakshmi Kantam、Koosam Mahendar、Bojja Sreedhar、K. Vijay Kumar、B. M. Choudary
DOI:10.1080/00397910802238791
日期:2008.10.28
Abstract Cyanosilylation of various aldehydes and ketones with TMSCN proceeded smoothly under mild conditions to give the corresponding cyanohydrin trimethylsilyl ethers in the presence of nanocrystalline magnesium oxide. The cyanohydrin trimethylsilyl ethers of aldehydes produced cyanohydrins in good to high yields on treatment with 2 N HCl. 29Si NMR spectral evidence proved that the reaction proceeds