The benzonitrile unit is widely found in natural products, pharmaceuticals, and agrochemicals. Synthesis of benzonitriles has received considerable interests from the chemical community over the last few decades. Present synthetic protocols mainly rely on the pre-existing benzene core to install a cyano moiety. A new NHC-catalyzed [4 + 2]-benzannulation protocol is reported to assemble the benzonitrile
Assembly of unsymmetrical 1,3,5-triarylbenzenes <i>via</i> tandem reaction of β-arylethenesulfonyl fluorides and α-cyano-β-methylenones
作者:Fang Zhang、Yi An、Jichang Liu、Guangfen Du、Zhihua Cai、Lin He
DOI:10.1039/d2nj01549h
日期:——
A transition-metal-free method has been proposed for the synthesis of unsymmetrical 1,3,5-triarylbenzenes via a tandem Diels–Alder cycloaddition/SuFEx/elimination process.
The present invention relates to compounds containing a dibenzo-fused six-member central ring structure together with a nitrogen containing heterocycle or benzonitrile. These compounds may be useful as host materials in phosphorescent electroluminescent devices.
Controllable Rh(III)-Catalyzed C–H Arylation and Dealcoholization: Access to Biphenyl-2-carbonitriles and Biphenyl-2-carbimidates
作者:Bo Jiang、Songxiao Wu、Jing Zeng、Xiaobo Yang
DOI:10.1021/acs.orglett.8b02915
日期:2018.10.19
A controllable Rh(III)-catalyzed C-H arylation and dealcoholization of benzimidates with arylboronic esters was developed, delivering various biphenyl-2-carbonitriles and biphenyl-2-carbimidates by simply tuning the reaction conditions. This approach features high efficiency, good functional group tolerance, and easy operation. It also provides an alternative pathway to thoroughly exploit the directing group in transition-metal-catalyzed C-H activations.
USOLTSEV A. A.; KARAULOV E. S.; TILICHENKO M. N., ZH. ORGAN. XIMII, 1976, 12, HO 11, 2471
作者:USOLTSEV A. A.、 KARAULOV E. S.、 TILICHENKO M. N.