NaOH-promoted reaction of 1,1-dihaloalkenes and 1<i>H</i>-azoles: synthesis of dihetaryl substituted alkenes
作者:Chen Zhang、Yu-Long Shi、Li-Yu Zhang、Dong-Peng Yuan、Meng-Tao Ban、Jia-Yao Zheng、Deng-Hui Liu、Shun-Na Guo、Dong-Mei Cui
DOI:10.1039/c8nj02756k
日期:——
An efficient NaOH-promoted synthesis of dihetaryl substituted alkenes from 1,1-dihaloalkenes and 1H-azoles under mild conditions has been developed. The reaction occurred in moderate to good yields and tolerated aliphatic, heterocyclic, and aryl substituted 1,1-dihaloalkenes containing functionalities such as nitriles, ethers, and halogens. Imidazoles and triazoles also afforded the desired products
Cu-catalyzed debrominative cyanation of gem-dibromoolefins: a facile access to α,β-unsaturated nitriles
作者:Brij Bhushan Ahuja、Arumugam Sudalai
DOI:10.1039/c5ob00394f
日期:——
of α,β-unsaturated nitriles from easily accessible gem-dibromoolefins has been developed. The method utilized inexpensive reagents such as Cu2O as a catalyst, L-proline as a ligand and NaCN as a cyanide source to afford α,β-unsaturated nitriles in high yields (62–86%). A deuterium exchange study has shown that one of the bromide atoms of gem-dibromoolefins exchanges with cyanide while the other with
CUCN-MEDIATED ONE POT PRODUCTION OF CINNAMONITRILE DERIVATIVES
申请人:Council of Scientific & Industrial Research
公开号:US20150031899A1
公开(公告)日:2015-01-29
The present invention discloses a cheaper and practical protocol for the construction of a wide variety of o-cyanocin-namonitrile and their structural analogues that proceeds with good yields in a single step using CuCN as the only reagent.
A Sequential Metal-Catalyzed C−N Bond Formation in the Synthesis of 2-Amido-indoles
作者:Pei-Yuan Yao、Yu Zhang、Richard P. Hsung、Kang Zhao
DOI:10.1021/ol801711p
日期:2008.10.2
A sequential metal-catalyzed C-N bond formation employing ortho-haloaryl acetylenic bromides is described. The initial amidation is highly selective for C-sp-N bond formation, leading to o-haloaryl-substituted ynamides that can be useful building blocks, while the overall sequence provides a facile construction of 2-amido-indoles.