A N-heterocyclic tetracarbene Pd(<scp>ii</scp>) moiety containing a Pd(<scp>ii</scp>)–Pb(<scp>ii</scp>) bimetallic MOF for three-component cyclotrimerization via benzyne
A N-heterocyclic tetracarbene Pd(ii) moiety containing a bimetallic metal–organic framework Pd(ii)–Pb(ii)–MOF, which can be a highly active heterogeneous catalyst for three-component cyclotrimerization, is reported.
The present invention provides a compound represented by the formula (1) or a pharmacologically acceptable salt thereof, or a hydrate thereof (provided that a compound in which all of R4a, R4b, and R4c are hydrogen atoms is excluded.):
[wherein R1 represents a hydrogen atom, R2 represents a hydrogen atom, R3 represents the formula:
wherein R4a, R4b, and R4c are the same as or different from each other and each represents a hydrogen atom, a C
1-6
alkyl group or a C
1-6
alkoxy group, etc.]
The present invention provides a compound represented by the formula (1) or a pharmacologically acceptable salt thereof, or a hydrate thereof (provided that a compound in which all of R4a, R4b, and R4c are hydrogen atoms is excluded.):
[wherein R1 represents a hydrogen atom, R2 represents a hydrogen atom, R3 represents the formula:
wherein R4a, R4b, and R4c are the same as or different from each other and each represents a hydrogen atom, a C1-6 alkyl group or a C1-6 alkoxy group, etc.]
Highly Efficient Route to <i>o</i>-Allylbiaryls via Palladium-Catalyzed Three-Component Coupling of Benzynes, Allylic Halides, and Aryl Organometallic Reagents
[reaction: see text] o-Allylbiaryl derivatives have been prepared in good to excellent yields by the palladium-catalyzed three-component reaction of allyl halides, benzynes, and aryl organometallic reagents.