New class of chiral diphosphine ligands for highly efficient transition metal-catalyzed stereoselective reactions: the bis (diphenylphosphino) five-membered …
…, F Sannicolò, L Trimarco, P Antognazza…
文献索引：Benincori, Tiziana; Brenna, Elisabetta; Sannicolo, Franco; Trimarco, Licia; Antognazza, Patrizia; et al. Journal of Organic Chemistry, 1996 , vol. 61, # 18 p. 6244 - 6251
The synthesis and application of three examples of a new class of chiral (C 2) atropisomeric diphosphines characterized by two interconnected five-membered heteroaromatic rings, with hindered rotation around the interanular bond, are described. Optically pure (+)-and (-)- 2, 2'-bis (diphenylphosphino)-4, 4', 6, 6'-tetramethyl-3, 3'-bibenzo [b] thiophene (tetraMe- bitianp)(1a) and the parent unsubstituted system (+)-and (-)-bitianp (1b) were synthesized. ...
