Phenylbiguanide as electron donor in heterocyclic synthesis

Dicyanomethylene compounds and heterocyclization of acylthiosemicarbazides

“…The predominant products 5, 7, 8 and 9 have an intenesting fused heterocyclic systems. Further, compounds 11a-d resemble analogues of the family of heterocyclic tetracyanoquinodimethanes [29,36,37]. The results reported here supplement the rich chemistry of 1-acylthiosemicarbazides 4a-d.…”

“…In it's 13 C-NMR spectrum C-2, C-3, C-8a and C-3a resonate at δ = 156.73, 112. 36 , 3) is very well-known electron-acceptor molecule [23], which has been successfully used for the preparation of electrically conducting salts and CT-complexes [24]. The interest of TCNQ has been focused on it's potential applications on molecular rectifiers [25], nonlinear optical materials [26], organic ferromagents [27] and organic chromophores with electron accepting properties [28].…”

Recent Heterocyclic Compounds from (1,3‐Dioxo‐2,3‐dihydro‐1H‐inden‐2‐ylidene)propanedinitrile

“…On reacting compound 1 with 1‐phenylbiguanide 66 in EtOH, 2‐amino‐4,4‐dicyano‐5‐oxo‐ N ‐phenyl‐4,5‐dihydroindeno[1,2‐ d ]pyrimidine‐3‐carboxamidine 67 was obtained (Scheme ) .…”

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

“…reported that heterocyclic compound 54 was formed during the reaction of phenyl biguanide ( 53 ) with 1 . Reaction of 53 with acceptor 2 afforded the corresponding pyrimidine 55 (Scheme ) .…”