C-H activations with challenging arylacetamides were accomplished by versatile ruthenium(II) biscarboxylate catalysis. The distal C-H functionalization offers ample scope-including twofold oxidative C-H functionalizations and alkyne hydroarylations-through facile base-assisted internal electrophilic-type substitution (BIES) C-H ruthenation by weak O-coordination.

A modular and completely stereoselective approach for the construction of all-carbon tetrasubstituted alkenes is described. It is based on the three-fold, sequential metal-catalyzed, cross-coupling functionalization of simple enolphosphate dibromide templates with carbon nucleophiles, affording tetrasubstituted alkenes as single isomers.

A simple and efficient protocol for the preparation of 7-substituted purines is described. 6- and 2,6-Dihalopurines were N(9)-tritylated and then transformed to 7,8-dihydropurines by DIBAL-H. Subsequent N(7)-alkylation followed by N(9)-trityl deprotection with trifluoroacetic acid was accompanied by spontaneous reoxidation, which led to the 7-substituted purines at 55-88% overall isolated yields.

A new method for the stereoselective cross‐coupling reaction of arylzinc chlorides with trisubstituted enol phosphates is described. The developed method requires aluminum chloride as a promoter, and the reaction conditions tolerate various functional groups. The observed reactivity pattern of trisubstituted enol phosphates was used for the stereoselective preparation of tamoxifen and its analogues.

C−H activations with challenging arylacetamides were accomplished by versatile ruthenium(II) biscarboxylate catalysis. The distal C−H functionalization offers ample scope—including twofold oxidative C−H functionalizations and alkyne hydroarylations—through facile base‐assisted internal electrophilic‐type substitution (BIES) C−H ruthenation by weak O‐coordination.