Hypervalent organoantimony compounds 12-ethynyl-tetrahydrodibenz[c,f][1,5]azastibocines: Highly efficient new transmetallating agent for organic halides

Pentavalent Organoantimony Compounds as Mild N-Arylating Agents for Amines: Cu-Mediated Ullmann-Type N-Arylation with Tetraarylantimony(V) Acetates

“…26,27) We also reported that Sb(V) compounds work as useful pseudo-halides in Pd-catalyzed cross-coupling reactions.…”

“…14,[23][24][25] In the course of our studies on organoantimony (Sb) compounds as synthetic reagents, we have recently demonstrated that Sb(III) compounds were efficient transmetallating agents for transition metal-catalyzed cross-coupling reactions. 26,27) We also reported that Sb(V) compounds work as useful pseudo-halides in Pd-catalyzed cross-coupling reactions. 28) These results stimulated us to employ them in Cu-mediated arylation of amines.…”

Microwave-Assisted Debromination of α-Bromoketones with Triarylstibanes in Water

“…[1][2][3] In particular, trivalent organoantimony(III) compounds (stibanes) have been used for a wide variety of transformations such as alkylation of carbonyl compounds, 4) Pd-catalyzed cross-coupling reactions, [5][6][7][8][9][10][11] photochemical reaction, 12) catalytic oxidative cyclization, 13) and asymmetric reactions with optically active compounds. [14][15][16][17][18] Stibane reagents such as triphenylstibane have low toxicity, [19][20][21] and are therefore promising reagents in organic synthesis.…”

Rhodium Catalyzed 1,4-Conjugate Addition of 1,5-Azastibocines with Electron Deficient Olefins

“…21,22) These results prompted us to investigate 1,4-conjugate addition using 1,5-azastibocines (1) with an expectation of mild reaction conditions in aqueous media.…”