A novel heterocyclization of 1-acetylenyl-9,10-anthraquinones
摘要:
1-Acetylenyl-9,10-anthraquinones react with an excess of NH,NH, at 80-115 degrees C to give a mixture of substituted 7H-dibenzo[de,h]quinolin-7-ones and anthra[9,1-cd]-1,2-diazepin-8-ones. The latter compounds undergo reductive contraction of the seven-membered ring to give the corresponding 7H-dibenzo[de,h]quinolin-7-ones. Bulky substituents in position 2 of the initial acetylenylanthraquinones prevent the formation of the seven-membered heterocycle. A scheme of the cyclocondensation was proposed.
Acetylenic compounds as intermediates in heterocyclic synthesis: Reaction of 1-acetylenylanthraquinones with hydrazine
作者:Mark S. Shvartsberg、Irena D. Ivanchikova、Sergei F. Vasilevsky
DOI:10.1016/s0040-4039(00)73054-1
日期:1994.3
Reaction of 1-acetylenic derivatives of anthraquinone with hydrazine affording substituted 4H-anthra[9, 1-cd]-1,2-diazepin-8-ones and 7H-dibenzo[de, h]quinolin-7-ones is reported.
Shvartsberg Mark S., Ivanchikova Irena D., Vasilevsy Sergei F., Tetrahedron Lett., 35 (1994) N 13, S 2077-2080
作者:Shvartsberg Mark S., Ivanchikova Irena D., Vasilevsy Sergei F.
DOI:——
日期:——
A novel heterocyclization of 1-acetylenyl-9,10-anthraquinones
作者:M. S. Shvartsberg、I. D. Ivanchikova、S. F. Vasilevsky
DOI:10.1007/bf02494508
日期:1998.10
1-Acetylenyl-9,10-anthraquinones react with an excess of NH,NH, at 80-115 degrees C to give a mixture of substituted 7H-dibenzo[de,h]quinolin-7-ones and anthra[9,1-cd]-1,2-diazepin-8-ones. The latter compounds undergo reductive contraction of the seven-membered ring to give the corresponding 7H-dibenzo[de,h]quinolin-7-ones. Bulky substituents in position 2 of the initial acetylenylanthraquinones prevent the formation of the seven-membered heterocycle. A scheme of the cyclocondensation was proposed.