Catalytic Reaction with Benzoic Acid Phenylacetylene in the Presence of Complex Catalysts
Askar B. Parmanov *
Department of General and Oil-Gas Chemistry, National University of Uzbekistan, Uzbekistan.
Suvankul E. Nurmanov
Department of General and Oil-Gas Chemistry, National University of Uzbekistan, Uzbekistan.
Mirjalol E. Ziyadullaev
Department of Chemistry, Chirchik State Pedagogical University, Uzbekistan.
Navro’za U. Bekboyeva
Department of General and Oil-Gas Chemistry, National University of Uzbekistan, Uzbekistan.
Nizombek D. Xolmuhammedov
Department of Basic Organic Synthesis Technology, Tashkent Institute of Chemical Technology, Uzbekistan.
Shavkat Sh. Tursunov
Department of General and Oil-Gas Chemistry, National University of Uzbekistan, Uzbekistan.
*Author to whom correspondence should be addressed.
Abstract
In this work, we studied the processes of vinyl ester formation by the addition of benzoic acid to phenylacetylene in the presence of complex catalysts of diacetate-di (2-amino-5-methylthio-1,3,4-thiadiazolo) cobalt(II) ([Co(C3H5N3S2)2(CH3COO)2] and tetrakis(2-amino-5-ethylthio-1,3,4-thiadiazole)-zinc(II) dinitrate ([Zn(C4H7S2)4](NO3)2): 1-phenylvinyl benzoate and anti-Markovnikov coupling product - styryl benzoate were obtained. The effect of the nature of solvents on the yields of products in the presence of the [Zn(C4H7S2)4](NO3)2 complex catalyst was studied. The structure of the synthesized vinyl esters was proved by IR, 1H NMR, 13C NMR spectroscopies.
Keywords: Benzoic acid, phenylacetylene, Markovnikov couplings, anti-Markovnikov couplings, -phenylvinyl benzoate, styryl benzoate