571903-64-5Relevant articles and documents
Sequential nucleophilic addition/1,2-rearrangement of N-iminolactam: A ring-contractive strategy for the synthesis of 2-acyl pyrrolidines
Kido, Yusaku,Kobori, Yukiko,Matsumoto, Yuki,Orihara, Kotomi,Takeda, Norihiko,Ueda, Masafumi,Yasui, Motohiro
supporting information, (2021/06/07)
A sequential nucleophilic addition/ring contraction of α-bromo N-iminolactam with organometallic reagents for the synthesis of 2-acyl pyrrolidines has been developed. The reaction allows facial construction of 2-acyl pyrrolidines incorporating not only ar
Iron-Catalyzed Room Temperature Cross-Couplings of Bromophenols with Aryl Grignard Reagents
Xu, Li-Chen,Liu, Kun-Ming,Duan, Xin-Fang
, p. 5421 - 5427 (2019/11/14)
Herein we report a room temperature Fe-catalyzed coupling reaction of various bromophenols with aryl Grignard reagents, which exhibits a wide substrate scope and high functional group tolerance. For the first time, the combination of simple Fe(acac)3/PBu3/Ti(OEt)4 has been used as an effective catalyst for the biaryl couplings of bromophenols or their Na or K salts with debromination and etherification side reactions being well suppressed. Various biphenols including natural product garcibiphenyl C as well as pharmaceutical diflunisal and its ethyl ester were facilely synthesized using the present protocol. (Figure presented.).
Cobalt-catalyzed addition of arylzinc reagents to alkynes to form ortho-alkenylarylzinc species through 1,4-cobalt migration
Tan, Boon-Hong,Dong, Jinghua,Yoshikai, Naohiko
supporting information, p. 9610 - 9614 (2012/11/07)
Migratory carbometalation: A cobalt-Xantphos complex catalyzes the addition of an arylzinc reagent to an unactivated internal alkyne; the reaction most likely involves insertion of the alkyne into an arylcobalt species and vinyl-to-aryl 1,4-cobalt migration, followed by transmetalation with the arylzinc reagent. Interception of the resulting ortho-alkenylarylzinc species with electrophiles allows access to 1-alkenyl arenes functionalized in the 2-position. Copyright
Radical catalysis of kumada cross-coupling reactions using functionalized grignard reagents
Manolikakes, Georg,Knochel, Paul
supporting information; experimental part, p. 205 - 209 (2009/04/10)
(Chemical Equation Presented) Palladium, radically different: A wide range of polyfunctional aryl- and heteroarylmagnesium reagents undergo fast Kumada cross-couplings (see scheme) with functionalized aryl bromides in the presence of a palladium catalyst and an alkyl iodide as additive. These reactions proceed by a radical pathway.
Iron-catalyzed aryl-aryl cross-couplings with magnesium-derived copper reagents
Sapountzis, Ioannis,Lin, Wenwei,Kofink, Christiane C.,Despotopoulou, Christina,Knochel, Paul
, p. 1654 - 1657 (2007/10/03)
(Chemical Equation Presented) Well-matched couples: Functionalized aryl and heteroaryl copper species obtained from the corresponding magnesium derivatives undergo Fe-catalyzed cross-coupling reactions with aryl iodides that bear keto, ester, triflate, or nitrile groups (see scheme).