42010-77-5Relevant academic research and scientific papers
Pd- and Ni-catalyzed cross-coupling reactions of functionalized organozinc reagents with unsaturated thioethers
Melzig, Laurin,Metzger, Albrecht,Knochel, Paul
supporting information; experimental part, p. 2948 - 2956 (2011/04/16)
A variety of unsaturated thioethers have been subjected to cross-coupling reactions with functionalized zinc reagents in the presence of a transition-metal catalyst. Three different catalytic systems based on Pd(OAc)2 or [Ni(acac)2] and the ligands S-Phos or DPE-Phos gave the best results. N-Heterocyclic thioethers based on a pyridine, pyrimidine, pyrazine, pyridazine, triazine, benzothiazole, benzoxazole, pyrrole, or quinazoline ring, as well as thiomethylacetylenes, serve as electrophiles in this cross-coupling reaction. Aryl-, heteroaryl-, benzylic, and alkylzinc halides with sensitive functionalities, such as ester, nitrile, or ketone groups react at ambient temperature with unsaturated thioethers using a Ni catalyst. The corresponding Pd-catalyzed reactions require slightly higher temperatures. Large-scale cross-coupling experiments (10-20 mmol) with N-heterocycles are also reported.
Cobalt-catalyzed arylation or benzylation of 2-chloro-4,6-dimethoxy-1,3,5- triazine
Begouin, Jeanne Marie,Claudel, Stephanie,Gosmini, Corinne
experimental part, p. 3192 - 3194 (2010/04/04)
A variety of functionalized aryl bromides or benzyl chlorides were coupled with 2-chloro-4,6-dimethoxy-1,3,5-trazine in good yields by a one-step procedure via cobalt catalysis. Georg Thieme Verlag Stuttgart.
Organometallic alkylation of 2-chloro-4,6-dimethoxy-1,3,5-triazine: A study
Samaritani, Simona,Signore, Giovanni,Malanga, Corrado,Menicagli, Rita
, p. 4475 - 4483 (2007/10/03)
The reactivity of 2-chloro-4,6-dimethoxy-1,3,5-triazine (1) has been investigated in Pd- or Ni-catalyzed cross-coupling processes with organostannanes, Grignard reagents, organoalanes and organozinc halides. All organometallic reagents considered form new C-C bonds on the heteroaromatic ring and afford the corresponding 2-alkyl-4,6-dimethoxy-1,3,5-triazines in moderate to very good yields. The collected data allows the choice of the alkylating agent as well as the experimental conditions depending on the residue to transfer.
