84190-12-5

Upstream product

• 105102-01-0 tricarbonyl(η(6)-(3,3-diphenyl-3-hydroxyprop-1-ynyl)benzene)chromium(0) 
• 245118-73-4 Cr(CO)3(η(6)-C6H5)C(N[CH(CH3)2]2)=C=C(C6H5)2 
• 7732-18-5 water 
• 23368-15-2 benzophenone*TiCl₄ 

Relevant academic research and scientific papers

Spectroscopic characterization, reactivity, and reactions of (arene)Cr(CO)3-stabilized γ-propargyl-allenyl cations

(Arene)Cr(CO)3-stabilized γ-propargyl-allenyl cations Cr(CO)3(η6-R1C6H 4)C≡CC+R2R3 (2) are reactive intermediates in the synthesis of arene-complex-substituted allenes or propargyl derivatives using mild in situ ionizations of the corresponding propargyl derivatives Cr-(CO)3(η6-R1C6H 4)C≡CCXR2R3 (X = OH, OAc). The regioselectivity of the nucleophilic attack is strongly dependent on the substitution pattern on the propargyl side chain, i.e., steric and electronic factors. In a representative case of a stable cation (2a; R1 = H, R2 = R3 = Ph) the structure investigation of this ambident electrophile by NMR spectroscopy and UV/vis spectroscopy reveals that a considerable contribution of the allenylium resonance structure accounts for a strong participation of the chromium carbonyl fragment in the efficient stabilization. The reactivity of 2a was studied by measuring the UV/vis kinetics for the nucleophilic trapping reactions revealing that the complexed cation 2a is by 2 orders of magnitude less reactive than the corresponding free ligand.

Synthese de chalcones a base de tetrathiafulvalene: RC(=O)CH=C(CH3)TTF, TTFC(=O)CH=C(CH3)R (R = TTF: C6H3S4; Bct: C6H5Cr(CO)3; Fc: C5H4FeC5H5). Propriete conductrice d'un nouveau complexe de transfert de charge TTFC(=O)CH=C(CH3)TTF*TCNQ

Novel chalcones that contain tetrathiafulvalene (TTF) and/or metallocene (ferrocenyl or benchrotrenyl) moieties: RC(=O)CH=C(CH3)R' (R and/or R' = TTF: C6H3S4; Fc: C5H4FeC5H5; Bct: C6H5Cr(CO)3) were prepared using TiCl3/Et3N as the condensation reagent.The 1-1 charge transfer complex with TCNQ (tetracyanoquinodimethane) was obtained for the ditetrathiafulvalenic derivative (R = R' = TTF).This complex exhibits the semiconducting behaviour.