Facile Synthesis of Amino Alcohols

Facile Synthesis of Amino Alcohols

A.H. Talıbov^1,3, Y.A. Abdullayev^1,3*, C. S. Salmanov¹,  R. Q. Hasanli², I.A. Valiyev²

1. Qafqaz University, Chemical Engineering Department, Baku, Azerbaijan / http://che.qu.edu.az, * Email: yabdullayev@qu.edu.az
2. Qafqaz University, Chemistry Education Department, Baku, Azerbaijan / http://ched.qu.edu.az/
3. AMEA, Institute of Petrochemical Processes, Baku, Azerbaijan

Keywords: amino alcohols, amine, thiethylamine,  epychlorohydrine, chloride scavenger,

Symmetrical amino alcohols are starting materials for synthesis of various cyclic structures. The structures can be used as effective corrosion inhibitor¹ and suppressing SRB (sulfate reducing bacteria) growth². That is why, they have broad application in petroleum industry. Symmetric amino alcohols structures are widely used in pipeline due to the dual effects. All the mentioned features makes facile synthesis of amino alcohols important. Many methods were developed for preparation of amino alcohols. Among the methods direct N-alkylation of epoxy alkyl halides with amines widely used for synthesizing symmetric amino alcohols. Generally, in the method amine was taken in excess in order to capture evolved HCl. Excess amine as a precious material was consumed in offered procedure.

Our aim is same as monitored above. The difference is we offered environmentally benign solvent (water) and no excessive use of amine. To prevent the amine consumption as mentioned in scheme 1 amine was taken in stoichiometric ratio (2:1) with epichlorohydrine. Triethylamine was used as chloride scavenger and water was utilized as solvent. Reaction condition is mild and in 6-7 hours excessive conversion of substrates into products were observed and products were identified by ¹H-¹³C NMR and GS-MS spectrometry.  Synthesized structures will be provided for acidic

corrosion tests and utilized as starting material for further transformations.

Scheme 1. Synthesis of symmetric amino alcohols from primary amines and epichlorohydrine.

References:

1. Ioannis Vyrides, Eleni Rakanta, Theodosia Zafeiropoulou, George Batis, “Open Journal of Civil Engineering”, 2013, 3, 1-8
2. A. Abdullayev, A.M.Samadov, L.I. Aliyeva, F.C. Isayeva, J.J. Musayev “Processes of Petrochemistry and Oil Refining”, 2006,№2(25), Baku, Azerbaijan, p.7-9