title: Aluminum chloride-induced heteroarylation of arenes and heteroarenes. 2. A new synthesis of 4-substituted phthalazin-1(2H)-ones.
abstract: We herein report the efficient syntheses of 4-(hetero)aryl-substituted 1-chlorophthalazines via heteroarylation of arenes/heteroarenes through AlCl(3)-induced C[bond]C formation reactions. A number of (hetero)arenes were reacted with 1,4-dichlorophthalazine to give aryl/heteroaryl-substituted phthalazines in good to excellent yields. Many of them were converted to the corresponding phthalazin-1(2H)-ones.
authors.affiliation: Chemistry-Discovery Research, Dr. Reddy's Laboratories Ltd., Bollaram Road, Miyapur, Hyderabad 500050, India. manojitpal@drreddys.com
authors.forename: Manojit
authors.initials: M
authors.lastname: Pal
authors.forename: Venkateswara Rao
authors.initials: VR
authors.lastname: Batchu
authors.forename: Karuppasamy
authors.initials: K
authors.lastname: Parasuraman
authors.forename: Koteswar Rao
authors.initials: KR
authors.lastname: Yeleswarapu