Mild and Phosphine-Free Iron-Catalyzed Cross-Coupling of Nonactivated Secondary Alkyl Halides with Alkynyl Grignard Reagents
作者:Chi Wai Cheung、Peng Ren、Xile Hu
DOI:10.1021/ol501087m
日期:2014.5.2
cross-coupling of nonactivated secondary alkylbromides and iodides with alkynyl Grignardreagents at room temperature has been developed. A wide range of secondary alkyl halides and terminal alkynes are tolerated to afford the substituted alkynes in good yields. A slight modification of the reaction protocol also allows for cross-coupling with a variety of primary alkyl halides.
作者:Richard A. Bartsch、Leah P. Bitalac、Charles L. Cowey、Sadik Elshani、Mi-Ja Goo、Vincent J. Huber、Sheryl N. Ivy、Youngchan Jang、Russell J. Johnson、Jong Seung Kim、Elzbieta Luboch、Joseph A. Mcdonough、Michael J. Pugia、Byungki Son、Qiang Zhao
DOI:10.1002/jhet.5570370554
日期:2000.9
Synthetic routes to forty-four dibenzocrown ether alcohols are reported. The new crown ether com pounds are based on a sym-dibenzo-16-crown-5 platform. Most have a hydroxy group and an alkyl, aryl, aralkyl, alkenyl, alkynyl, or perfluoroalkyl group on the central carbon of the three-carbon bridge. Others have substituted benzene rings and either a hydroxy or -O(CH2)nOH group attached to the central
Versatile synthesis of α, β-acetylenic ketones by oxidative nucleophilic addition of vanadium acetylides
作者:Toshikazu Hirao、Daisuke Misu、Toshio Agawa
DOI:10.1016/s0040-4039(00)84141-6
日期:1986.1
Treatment of aldehydes with vanadium acetylides generated from equimolar amounts of vanadium trichloride and acetylenic Grignard or lithium compounds gave α,β-acetylenicketones via oxidative nucleophilic addition.
A novel and efficient synthesis of 3-iodo substituted 1,8-naphthyridines by electrophilic cyclization of 2-amino nicotinaldehyde and their antimicrobial activity
作者:B. Sakram、K. Ashok、S. Rambabu、B. Sonyanaik、D. Ravi
DOI:10.1134/s1070363217080266
日期:2017.8
Synthesis of substituted 1,8-naphthyridines based on 2-aminonicotinaldehyde under mild conditions is studied. Out of three electrophilic iodine sources (I2, NIS, and ICl) studied, I2 was determined to act most efficiently in the process. High overall yields were achieved for aliphatic substitution at the reaction center. All compounds were evaluated for antibacterial activity (Staphylococus aureus