Abstract
The reaction of dibenzoylacetylene with N,N′-dialkyl or N,N′-diaryl glyoxal-bisimnes or with benzylideneanilines in boiling ethanol leads to the formation of pentasubstituted 1,2-dihydropyridines in 52–87 % yield together with the corresponding enamines derived from dibenzoylacetylene.
References
1.
Gomaa M.A.-M.
, J. Chem. Res. (S) , 1997 , 444 ; J. Chem. Res. (M) , 1997, 2679.
2.
El-Rayyes N.R.
, and
Al-Hajjar F. H.
, J. Heterocycl. Chem. , 1984 , 21 , 1473 .
3.
Lahiri S.
,
Mahajan M. P.
,
Prasad R.
, and
George M. V.
, Tetrahedron , 1977 , 33 , 3159 .
4.
Sinsky M.S.
, and
Bass R. G.
, J. Heterocycl. Chem. , 1984 , 21 , 759 .
5.
Yavari I.
,
Anary-Abbasinejad M.
, and
Alizadeh A.
, Tetrahedron Lett. , 2003 , 43 , 4503 .
6.
Jolles E.
, Gazz. Chem. Ital. , 1938 , 68 , 488 .
7.
Van Loock E.
,
L'abbé G.
, and
Smets G.
, Tetrahedron Lett. , 1970 , 20 , 1693 .
8.
Turner A.B.
,
Heine H. W.
,
Irving J.
, and
Bush J. B.
Jr.
, J. Am. Chem. Soc. , 1965 , 87 , 1050 .
9.
Roe A.
, and
Montgomery J. A.
, J. Am. Chem. Soc. , 1952 , 75 , 910 .
10.
Kliegman J.M.
, and
Barnes R. K.
, J. Org. Chem. , 1970 , 35 , 3140 .
11.
Kliegman J.M.
, and
Barnes R. K.
, Tetrahedron , 1970 , 26 , 2555 .
12.
Nogĭdeli A.I.
,
Tsiskarishvili K.
, and
Beshidze A.
, Sbornik State Obshchei Khim. , 1953 , 2 , 1639 ; Chem. Abstr. 49 , 5401i.