Большое спасибо.
Dai, Weixiang; Petersen, Jeffrey L.; Wang, Kung K.;
Synthesis of Indeno-Fused Derivatives of Quinolizinium Salts, Imidazo[1,2-a]pyridine, Pyrido[1,2-a]indole, and 4H-Quinolizin-4-one via Benzannulated Enyne−Allenes
Journal of Organic Chemistry;
70; 17; 2005; 6647 - 6652;
Код: Выделить всё
http://dx.doi.org/10.1021/jo0505730
Preparation of Aza-Polycyclic Aromatic Compounds via Superelectrophilic Cyclizations
Journal of Organic Chemistry;
73; 9; 2008; 3654 - 3657;
Код: Выделить всё
http://dx.doi.org/10.1021/jo8003474