title: Regioselective switching approach for the synthesis of α and δ carboline derivatives.
abstract: A metal-free protocol for accessing both α and δ-carboline derivatives, starting from a common indolylchalcone oxime ester precursor is reported. The reaction involves mild conditions and uses a regiodivergent approach. DDQ is used as a switching agent in selectively generating α and δ-carboline derivatives in good to moderate yields.
authors.affiliation: Department of Chemistry, National Taiwan Normal University, 88, Sec. 4, Tingchow Road, Taipei, Taiwan. cheyaocf@ntnu.edu.tw.
authors.forename: Tang-Hao
authors.initials: TH
authors.lastname: Yang
authors.forename: Chun-Wei
authors.initials: CW
authors.lastname: Kuo
authors.forename: Veerababurao
authors.initials: V
authors.lastname: Kavala
authors.forename: Ashok
authors.initials: A
authors.lastname: Konala
authors.forename: Chia-Yu
authors.initials: CY
authors.lastname: Huang
authors.forename: Ching-Fa
authors.initials: CF
authors.lastname: Yao