173202-94-3Relevant academic research and scientific papers
C-H bond activation of thiophenes at iridium: a lower energy process than C-S bond scission
Bianchini, Claudio,Jimenez, M. Victoria,Meli, Andrea,Moneti, Simonetta,Vizza, Francesco
, p. 27 - 32 (1995)
The 16-electron fragment , generated in situ by thermolysis of (triphos)Ir(H)2(C2H5) in THF, reacts with thiophene (T) or benzothiophene (BT) to give, in the temperature range from 67 to 100 deg C, mixtures of C-H and C-S insertion products as a result of parallel reactions .Above 100 deg C, the (thienyl)dihydride complexes convert to the thermodynamically more stable C-S insertion products (butadienethiolate and 2-vinylthiophenolate complexes) through an intramolecular mechanism which does not involve T or BT dissociation.A comparison is made to analogous reactions with dibenzothiophene. Keywords: Iridium; Thiophene; C-H activation; Hydrodesulfurization; Phosphine; Thiolate
