Palladium-catalyzed remote C–H functionalization of 2-aminopyrimidines
作者:Animesh Das、Akash Jana、Biplab Maji
DOI:10.1039/d0cc00575d
日期:——
A straightforward strategy was developed for the arylation and olefination at the C5-position of the N-(alkyl)pyrimidin-2-amine core with readily available aryl halides and alkenes, respectively. This approach was highly regioselective, and the transformation was achieved based on two different (Pd(ii)/Pd(iv)) and (Pd(0)/Pd(ii)) catalytic cycles.
Conjugate addition is among the most important synthetic protocols for constructing carbon skeletons and is widely used to synthesize natural products and drugs. However, asymmetric catalysis studies have mainly focused on constructing stereogenic centers arising from conjugate alkenes. Here, we report the first photoinduced cobalt-catalyzed dynamic kinetic reductive conjugate addition reaction that
Polymer compound, film obtained by hardening this polymer compound and electronic device comprising this film
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:US10676554B2
公开(公告)日:2020-06-09
A polymer compound comprising
a repeating unit having at least one group selected from the group consisting of a blocked isocyanato group and a blocked isothiocyanato group,
a repeating unit having at least one group selected from the group consisting of a hydroxy group and a carboxy group and
a repeating unit represented by the following formula (1), wherein
the content of the repeating unit having at least one group selected from the group consisting of a blocked isocyanato group and a blocked isothiocyanato group in the polymer compound is 1% by mol or more and 30% by mol or less when the total content of all repeating units contained in the above-described polymer compound is taken as 100% by mol:
in the formula (1), R2, R2 and R3 each independently represent a hydrogen atom or a methyl group.
The ‘Baylis - Hillman Reaction’ mechanism and applications revisited
作者:Yves Fort、Marie Christine Berthe、Paul Caubere
DOI:10.1016/s0040-4020(01)88227-2
日期:1992.1
It is shown that reaction of aryl, benzyl, alkyl and functionalised alkyl acrylic esters with benzaldehyde, in the presence of 1,4-diazabicyclo[2.2.2] octane, strongly depends upon the electronic and steric effects of the ester part. This influence is also observed in condensation of furfuraldehyde. Moreover, for the first time, it is shown that the overall condensation is equilibrated.