ADVANCES IN TETRAZOLE CHEMISTRY IN RUSSIA

V.A. Ostrovskii (all other questions, proposals or information) , Michael Yudintceff (web-master)

St.-Petersburg State Institute of Technology , 198013, St.Petersburg, Russia

The Cycle Formation

 

1. 5-Substituted Tetrazoles by 1,3-Dipolar Cycloaddition[1,2]

2. 1,5-disubstituted tetrazoles by 1,3-dipolar cycloaddition [3]

lgkR = r s I + lgko

1.

t, oC r -lgko  
80 3.35 5.99 D # H = 50-60 kJ/mol
90 3.37 5.69  
100 3.41 5.43 D # S = -(120-200) J/mol K
110 3.60 5.34  

2.

t, oC r -lgko  
60 -0.94 7.43 D # H = 85-90 kJ/mol
80 -1.08 6.64  
100 - 0.99 5.84 D # S = -(110-120) J/mol K

 

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1. I.E.Titova, V.S.Poplavskii, G.I. Koldobskii, V.A.Ostrovskii, Khim.Geterotsikl.Soedin., # 8, 1086-1089 (1986).

2.V.A.Ostrovskii,V.S.Poplavskii,G.I.Koldobskii,G.B.Erussalimsky,Khim.Geterotsikl.Soedin., # 9, 1214-1217 (1992).

3. A.A.Melnikov, M.M.Sokolova, M.A.Pervozvanskaja, V.V.Melnikov, Zh.Org.Khim., 15, # 9,1861-1866 (1979).