Novel [2.2]paracyclophane derivatives via charge-transfer complexation

Abstract

[Traduit par la rtdaction]

Phenylbiguanide as electron donor in heterocyclic synthesis

“…Our long-term interest in chemical reactions induced by charge-transfer complexation forms a part of our systematic efforts to obtain new heterocyclic systems [18][19][20][21][22][23][24][25][26][27]. We have turned our attention to phenylbiguanide as electron donor towards some -acceptors, such as tetracynoethylene (TCNE), 2-dicyanomethyleneindane-1,3-dione (CNIND), 2,3-dicyano-1,4-naphthoquinone (DCNQ), tetracyanoquinodimethane (TCNQ), and 3,4,5,6-tetrachloro-1,2-benzoquinone (CHL-o), to synthesize some heterocycles with the expectation that they too might exhibit biological activity.…”

1,4‐Dioxo‐1,4‐dihydronaphthalene‐2,3‐dicarbonitrile and 1,1,2,2‐Tetracyanoethene in Heterocyclization

“…The reduced form of 2 thus appeared as tetracyanoethane ( 66 ). The proposed mechanism can be illustrated as shown in Scheme .…”

Charge-transfer interaction of 4,13-diamino[2.2]paracyclophane with π-acceptors

“…[1][2][3] In recent years we reported on the synthesis of some interesting new heterocyclic systems by CT-complexation between simple heterocycles as electron donors and various π-acceptors. [4][5][6][7][8][9][10][11][12][13] In 1993 Mourad et al 14 Recently, we have furthermore succeeded to construct a variety of poorly investigated types of heterocyclic compounds such as pleiadenes and perimidines, by the reaction of 1,8-diaminonaphthalene with selected π-acceptors.…”