The modification of ArSCH2(3,5-Me2Pz) (Ar = phenyl or 2-pyridyl, Pz = pyrazol-1-yl) by organotin group and related reactions

Upon treatment of functionalized ligands Ph3SnCH(SPh)(3,5-Me2Pz) and Ph3SnCH(SPy)(3,5-Me2Pz) (Pz = pyrazol-1-yl and Py = 2-pyridyl) with group 6 metal carbonyl complexes, markedly different reactions are observed. Only the substitution reaction of carbonyls takes place in the former, while the oxidative addition reaction of the Sn-Csp3 bond to the Mo(0) atom is observed in the latter. Additional treatment of the oxidative addition product with P(OR)3 gives rise to the isomerization of the C-S bond to the C-N bond, generating the thione-S coordinated complex (R = Ph or Et).